Benzene DerivativesBenzene: Toxic, volatile, flammable liquid hydrocarbon byproduct of coal distillation. It is used as an industrial solvent in paints, varnishes, lacquer thinners, gasoline, etc. Benzene causes central nervous system damage acutely and bone marrow damage chronically and is carcinogenic. It was formerly used as parasiticide.Dictionaries, MedicalDictionaries as Topic: Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.Petroleum: Naturally occurring complex liquid hydrocarbons which, after distillation, yield combustible fuels, petrochemicals, and lubricants.Dictionaries, ChemicalSorbic Acid: Mold and yeast inhibitor. Used as a fungistatic agent for foods, especially cheeses.TextilesTextile Industry: The aggregate business enterprise of manufacturing textiles. (From Random House Unabridged Dictionary, 2d ed)Asia: The largest of the continents. It was known to the Romans more specifically as what we know today as Asia Minor. The name comes from at least two possible sources: from the Assyrian asu (to rise) or from the Sanskrit usa (dawn), both with reference to its being the land of the rising sun, i.e., eastern as opposed to Europe, to the west. (From Webster's New Geographical Dictionary, 1988, p82 & Room, Brewer's Dictionary of Names, 1992, p34)Bulimia: Eating an excess amount of food in a short period of time, as seen in the disorder of BULIMIA NERVOSA. It is caused by an abnormal craving for food, or insatiable hunger also known as "ox hunger".Asia, Southeastern: The geographical area of Asia comprising BORNEO; BRUNEI; CAMBODIA; INDONESIA; LAOS; MALAYSIA; the MEKONG VALLEY; MYANMAR (formerly Burma), the PHILIPPINES; SINGAPORE; THAILAND; and VIETNAM.Peptide Hydrolases: Hydrolases that specifically cleave the peptide bonds found in PROTEINS and PEPTIDES. Examples of sub-subclasses for this group include EXOPEPTIDASES and ENDOPEPTIDASES.Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Aldehydes: Organic compounds containing a carbonyl group in the form -CHO.Tylosin: Macrolide antibiotic obtained from cultures of Streptomyces fradiae. The drug is effective against many microorganisms in animals but not in humans.Molecular Structure: The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.Fluorine: A nonmetallic, diatomic gas that is a trace element and member of the halogen family. It is used in dentistry as flouride (FLUORIDES) to prevent dental caries.Halogenation: Covalent attachment of HALOGENS to other compounds.BenzaldehydesFluorine Compounds: Inorganic compounds that contain fluorine as an integral part of the molecule.Fluorides: Inorganic salts of hydrofluoric acid, HF, in which the fluorine atom is in the -1 oxidation state. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Sodium and stannous salts are commonly used in dentifrices.Hydrocarbons, Aromatic: Organic compounds containing carbon and hydrogen in the form of an unsaturated, usually hexagonal ring structure. The compounds can be single ring, or double, triple, or multiple fused rings.Amino Acids, Aromatic: Amino acids containing an aromatic side chain.Sodium Fluoride: A source of inorganic fluoride which is used topically to prevent dental caries.Agriculture: The science, art or practice of cultivating soil, producing crops, and raising livestock.Electromagnetic Fields: Fields representing the joint interplay of electric and magnetic forces.Ferns: Seedless nonflowering plants of the class Filicinae. They reproduce by spores that appear as dots on the underside of feathery fronds. In earlier classifications the Pteridophyta included the club mosses, horsetails, ferns, and various fossil groups. In more recent classifications, pteridophytes and spermatophytes (seed-bearing plants) are classified in the Subkingdom Tracheobionta (also known as Tracheophyta).Magnetics: The study of MAGNETIC PHENOMENA.IndiaIndustry: Any enterprise centered on the processing, assembly, production, or marketing of a line of products, services, commodities, or merchandise, in a particular field often named after its principal product. Examples include the automobile, fishing, music, publishing, insurance, and textile industries.Automobiles: A usually four-wheeled automotive vehicle designed for passenger transportation and commonly propelled by an internal-combustion engine using a volatile fuel. (Webster, 1973)Indonesia: A republic stretching from the Indian Ocean east to New Guinea, comprising six main islands: Java, Sumatra, Bali, Kalimantan (the Indonesian portion of the island of Borneo), Sulawesi (formerly known as the Celebes) and Irian Jaya (the western part of New Guinea). Its capital is Djakarta. The ethnic groups living there are largely Chinese, Arab, Eurasian, Indian, and Pakistani; 85% of the peoples are of the Islamic faith.Commerce: The interchange of goods or commodities, especially on a large scale, between different countries or between populations within the same country. It includes trade (the buying, selling, or exchanging of commodities, whether wholesale or retail) and business (the purchase and sale of goods to make a profit). (From Random House Unabridged Dictionary, 2d ed, p411, p2005 & p283)Small Business: For-profit enterprise with relatively few to moderate number of employees and low to moderate volume of sales.Research: Critical and exhaustive investigation or experimentation, having for its aim the discovery of new facts and their correct interpretation, the revision of accepted conclusions, theories, or laws in the light of newly discovered facts, or the practical application of such new or revised conclusions, theories, or laws. (Webster, 3d ed)Economic Competition: The effort of two or more parties to secure the business of a third party by offering, usually under fair or equitable rules of business practice, the most favorable terms.1-Octanol: A colorless, slightly viscous liquid used as a defoaming or wetting agent. It is also used as a solvent for protective coatings, waxes, and oils, and as a raw material for plasticizers. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)Chemical Processes: The reactions and interactions of atoms and molecules, the changes in their structure and composition, and associated energy changes.Octanols: Isomeric forms and derivatives of octanol (C8H17OH).Pharmacies: Facilities for the preparation and dispensing of drugs.Quantitative Structure-Activity Relationship: A quantitative prediction of the biological, ecotoxicological or pharmaceutical activity of a molecule. It is based upon structure and activity information gathered from a series of similar compounds.Solubility: The ability of a substance to be dissolved, i.e. to form a solution with another substance. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Water Pollutants, Chemical: Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water.Irritants: Drugs that act locally on cutaneous or mucosal surfaces to produce inflammation; those that cause redness due to hyperemia are rubefacients; those that raise blisters are vesicants and those that penetrate sebaceous glands and cause abscesses are pustulants; tear gases and mustard gases are also irritants.Alkylation: The covalent bonding of an alkyl group to an organic compound. It can occur by a simple addition reaction or by substitution of another functional group.Daphnia: A diverse genus of minute freshwater CRUSTACEA, of the suborder CLADOCERA. They are a major food source for both young and adult freshwater fish.Copyright: It is a form of protection provided by law. In the United States this protection is granted to authors of original works of authorship, including literary, dramatic, musical, artistic, and certain other intellectual works. This protection is available to both published and unpublished works. (from Circular of the United States Copyright Office, 6/30/2008)Formularies as Topic: Works about lists of drugs or collections of recipes, formulas, and prescriptions for the compounding of medicinal preparations. Formularies differ from PHARMACOPOEIAS in that they are less complete, lacking full descriptions of the drugs, their formulations, analytic composition, chemical properties, etc. In hospitals, formularies list all drugs commonly stocked in the hospital pharmacy.Structure-Activity Relationship: The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups.Economics, Pharmaceutical: Economic aspects of the fields of pharmacy and pharmacology as they apply to the development and study of medical economics in rational drug therapy and the impact of pharmaceuticals on the cost of medical care. Pharmaceutical economics also includes the economic considerations of the pharmaceutical care delivery system and in drug prescribing, particularly of cost-benefit values. (From J Res Pharm Econ 1989;1(1); PharmacoEcon 1992;1(1))

Anaerobic oxidation of o-xylene, m-xylene, and homologous alkylbenzenes by new types of sulfate-reducing bacteria. (1/635)

Various alkylbenzenes were depleted during growth of an anaerobic, sulfate-reducing enrichment culture with crude oil as the only source of organic substrates. From this culture, two new types of mesophilic, rod-shaped sulfate-reducing bacteria, strains oXyS1 and mXyS1, were isolated with o-xylene and m-xylene, respectively, as organic substrates. Sequence analyses of 16S rRNA genes revealed that the isolates affiliated with known completely oxidizing sulfate-reducing bacteria of the delta subclass of the class Proteobacteria. Strain oXyS1 showed the highest similarities to Desulfobacterium cetonicum and Desulfosarcina variabilis (similarity values, 98.4 and 98.7%, respectively). Strain mXyS1 was less closely related to known species, the closest relative being Desulfococcus multivorans (similarity value, 86.9%). Complete mineralization of o-xylene and m-xylene was demonstrated in quantitative growth experiments. Strain oXyS1 was able to utilize toluene, o-ethyltoluene, benzoate, and o-methylbenzoate in addition to o-xylene. Strain mXyS1 oxidized toluene, m-ethyltoluene, m-isoproyltoluene, benzoate, and m-methylbenzoate in addition to m-xylene. Strain oXyS1 did not utilize m-alkyltoluenes, whereas strain mXyS1 did not utilize o-alkyltoluenes. Like the enrichment culture, both isolates grew anaerobically on crude oil with concomitant reduction of sulfate to sulfide.  (+info)

Properties of 5-aminolaevulinate synthetase and its relationship to microsomal mixed-function oxidation in the southern armyworm (Spodoptera eridania). (2/635)

1. Activity of 5-aminolaevulinate synthetase was measured in the midgut and other tissues of the last larval instar of the southern armyworm (Spodoptera eridania Cramer, formerly Prodenia eridania Cramer). 2. Optimum conditions for measuring the activity were established with respect to all variables involved and considerable differences from those reported for mammalian enzyme preparations were found. 3. Maximum activity (20 nmol/h per mg of protein) occurs 18-24 h after the fifth moult and thereafter decreases to trace amounts as the larvae age and approach pupation. 4. Synthetase activity was rapidly induced by oral administration (in the diet) of pentamethylbenzene, phenobarbital, diethyl 1,4-dihydro-2,4,6-trimethylpyridine-3, 5-dicarboxylate, and 2-allyl-2-isopropylacetamide. 5. Puromycin inhibited the induction of synthetase by pentamethylbenzene. 6. Induction of 5-aminolaevulinate synthetase correlated well with the induction of microsomal N-demethylation of p-chloro-N-methylaniline, except for phenobarbital, which induced the microsomal oxidase relatively more than the synthetase.  (+info)

Localization and comparative toxicity of methylsulfonyl-2,5- and 2,6-dichlorobenzene in the olfactory mucosa of mice. (3/635)

Several methylsulfonyl (MeSO2) metabolites formed from chlorinated aromatic hydrocarbons have been identified in human milk, lung, and body fat, as well as in the tissues of Baltic grey seals and arctic polar bears. The tissue localization and nasal toxicity of two methylsulfonyl-substituted dichlorobenzenes (diCl-MeSO2-B), with the chlorine atoms in the 2,5-, and 2,6- positions, were investigated in female NMRI and C57B1 mice. Using tape-section autoradiography, animals dosed i.v. with 14C-labeled 2,5-, or 2,6-(diCl-MeSO2-B) showed a preferential uptake of radioactivity in the olfactory mucosa and the tracheobronchial epithelium. Histopathology showed that 2,6-(diCl-MeSO2-B) is a potent toxicant that induces necrosis in the olfactory mucosa following a single dose as low as 4 mg/kg (i.p. injection), whereas 2,5-(diCl-MeSO2-B) induced no signs of toxicity in the olfactory mucosa at doses as high as 130 mg/kg (i.p. injection). Necrosis of the Bowman's glands was the first sign of 2,6-(diCl-MeSO2-B)-induced toxicity followed by degeneration of the neuroepithelium, which implies that the Bowman's gland may be the primary site of toxicity and degeneration of the neuroepithelium may be a secondary effect. Administration of the parent compounds, 1,3-dichlorobenzene and 1,4-dichlorobenzene, or the chlorinated analog 1,2,3-trichlorobenzene (85, 85, and 105 mg/kg, respectively; i.p. injection), induced no signs of toxicity in the olfactory mucosa. These and previous results suggest that 2,6-positioned chlorine atoms and an electron withdrawing substituent in the primary position is an arrangement that predisposes for toxicity in the olfactory mucosa.  (+info)

Ratio-fluorescence microscopy of lipid oxidation in living cells using C11-BODIPY(581/591). (4/635)

A ratio-fluorescence assay was developed for on-line localization and quantification of lipid oxidation in living cells. The assay explores the oxidative sensitivity of C11-BODIPY(581/591). Upon oxidation, the fluorescence of this fluorophore shifts from red to green. The probe incorporates readily into cellular membranes and is about twice as sensitive to oxidation as arachidonic acid. Using confocal microscopy, the cumene hydroperoxide-induced oxidation of C11-BODIPY(581/591) was visualized at the sub-cellular level in rat-1 fibroblasts. Preloading of the cells with tocopherol retarded this oxidation. The data demonstrate that C11-BODIPY(581/591) is a valuable tool to quantify lipid oxidation and anti-oxidant efficacy in single cells.  (+info)

Protective effect of dehydroepiandrosterone against lipid peroxidation in a human liver cell line. (5/635)

OBJECTIVE: Dehydroepiandrosterone (DHEA) is a widely studied steroid hormone with multi-functional properties. Reports suggest that some of the many activities of DHEA are due to its protective effect against lipid peroxidation. Nevertheless, the antioxidant properties of DHEA are still the subject of debate. The aim was to evaluate whether its two opposed effects on lipid peroxidation reported in the literature may be dependent on schedule and doses used. METHODS: Chang liver cells, a line derived from normal human liver, were grown in media containing either no steroids (control) or DHEA at concentrations ranging from 0.1 micromol/l to 50 micromol/l. At specific times, cultures were halted and cells received a pro-oxidant stimulus (cumene (CuOOH) 0.5 mmol/l), at which time cell viability (by trypan blue staining and lactate dehydrogenase (LDH) release) and thiobarbituric acid reactive substances (TBARS) concentration (spectrophotometrical assay) were evaluated. RESULTS: At concentrations ranging from 0.1 micromol/l to 1 micromol/l, DHEA protects Chang liver cells against lipid peroxidation and/or death induced by cumene. This effect disappears if the concentration is increased to 10 micromol/l; at higher concentrations (50 micromol/l) a pro-oxidant/cytotoxic effect of DHEA appears. CONCLUSIONS: DHEA exhibits two opposed effects on lipid peroxidation; depending on its concentration it acts either to limit or to induce oxidative stress. The threshold concentration at which the pro-oxidant activity of DHEA prevails is not far in excess of that having an antioxidant effect. Either effect of DHEA on lipid peroxidation is only evident after a 'lag-phase'.  (+info)

The branched-chain dodecylbenzene sulfonate degradation pathway of Pseudomonas aeruginosa W51D involves a novel route for degradation of the surfactant lateral alkyl chain. (6/635)

Pseudomonas aeruginosa W51D is able to grow by using branched-chain dodecylbenzene sulfonates (B-DBS) or the terpenic alcohol citronellol as a sole source of carbon. A mutant derived from this strain (W51M1) is unable to degrade citronellol but still grows on B-DBS, showing that the citronellol degradation route is not the main pathway involved in the degradation of the surfactant alkyl moiety. The structures of the main B-DBS isomers and of some intermediates were identified by gas chromatography-mass spectrometric analysis, and a possible catabolic route is proposed.  (+info)

Randomized phase II study of the neurokinin 1 receptor antagonist CJ-11,974 in the control of cisplatin-induced emesis. (7/635)

PURPOSE: To determine the efficacy and safety of the neurokinin type 1 receptor antagonist CJ-11,974 for the control of high-dose cisplatin-induced emesis. PATIENTS AND METHODS: A double-blind, randomized, phase II design with a group sequential stopping rule was used in this study. Sixty-one patients with cancer who were receiving cisplatin at a dose of at least 100 mg/m2 for the first time were enrolled. All patients received granisetron 10 microg/kg and dexamethasone 20 mg intravenously 30 minutes before they were given cisplatin. Patients were randomly assigned to two groups: group 1 received CJ-11,974 100 mg, and group 2 received placebo orally 30 minutes before and 12 hours after cisplatin and then twice daily on days 2 through 5 after cisplatin. The primary end point was the percentage of patients who developed delayed emesis (emesis on the second to fifth days after cisplatin). RESULTS: Thirty patients were enrolled in group 1, and 31 patients were enrolled in group 2. Fifty-eight patients were assessable for efficacy. Complete control of emesis (expressed as the percentage of patients who had no emesis) was as follows: day 1, 85.7% (group 1) and 66.7% (group 2) (P = .090); days 2 through 5, 67.8% (group 1) and 36.6% (group 2) (P = .0425, adjusted); days 1 through 5, 64.3% (group 1) and 30% (group 2) (P = .009). Patients in group 1 experienced significantly less nausea than patients in group 2 on day 1 (P = .024). Treatment was well tolerated in both groups. CONCLUSION: We conclude from this exploratory phase II trial that CJ-11,974 is superior to placebo in controlling cisplatin-induced delayed emesis and may provide additive benefit in acute emesis and nausea control when combined with a 5-hydroxytryptamine-3 receptor antagonist and dexamethasone. Additional larger trials are indicated to confirm the clinical value of CJ-11,974.  (+info)

In vitro studies on the initial reactions of anaerobic ethylbenzene mineralization. (8/635)

Anaerobic mineralization of ethylbenzene by the denitrifying bacterium Azoarcus sp. strain EB1 was recently shown to be initiated by dehydrogenation of ethylbenzene to 1-phenylethanol. 1-Phenylethanol is converted to benzoate (benzoyl coenzyme A) via acetophenone as transient intermediate. We developed in vitro assays to examine ethylbenzene dehydrogenase and 1-phenylethanol dehydrogenase activities in cell extracts of this strain. With p-benzoquinone as the electron acceptor, cell extracts of Azoarcus sp. strain EB1 catalyzed ethylbenzene oxidation at a specific rate of 10 nmol min(-1) [mg of protein](-1) and an apparent K(m) for ethylbenzene of approximately 60 microM. The membrane-associated ethylbenzene dehydrogenase activity was found to oxidize 4-fluoroethylbenzene and propylbenzene but was unable to transform 4-chloro-ethylbenzene, the ethyltoluenes, and styrene. Enzymatic ethylbenzene oxidation was stereospecific, with (S)-(-)-1-phenylethanol being the only enantiomer detected by chiral high-pressure liquid chromatography analysis. Moreover, cell extracts catalyzed the oxidation of (S)-(-)-1-phenylethanol but not of (R)-(+)-1-phenylethanol to acetophenone. When cell extracts were dialyzed, (S)-(-)-1-phenylethanol oxidation occurred only in the presence of NAD(+), suggesting that NAD(+) is the physiological electron acceptor of 1-phenylethanol dehydrogenase. Both ethylbenzene dehydrogenase and 1-phenylethanol dehydrogenase activities were present in Azoarcus sp. strain EB1 cells that were grown anaerobically on ethylbenzene, 1-phenylethanol, and acetophenone, but these activities were absent in benzoate-grown cells.  (+info)

*Acid dissociation constant

Benzene Derivatives". J. Am. Chem. Soc. 59 (1): 96-103. doi:10.1021/ja01280a022. Hansch, C.; Leo, A.; Taft, R. W. (1991). "A ... benzene, -toluene, -phenol, and -aniline". J. Org. Chem. 73 (7): 2607-2620. doi:10.1021/jo702513w. PMID 18324831. Kütt, A.; ...

*Alkyne trimerisation

Formation of benzene derivatives". J. Mol. Catal. 60 (3): 313. doi:10.1016/0304-5102(90)85254-F. Lee, C. L.; Hunt, C. T.; Balch ... The formation of fulvene and benzene". J. Am. Chem. Soc. 106 (26): 8315. doi:10.1021/ja00338a063. Amer, I.; Bernstein, T.; ...

*Carbon nanothread

Silveira, J. F. R. V.; Muniz, A. R. (2017). "Functionalized diamond nanothreads from benzene derivatives". Physical Chemistry ... Degree 4 nanothreads have a double bond remaining from benzene and thus only two bonds formed between each pair of benzene ... Get Ready for Diamond Nanothread technologyreview.com Synthesizing Carbon Nanothreads from Benzene spie.org Liquid Benzene ... The distances between benzene molecules with van der Waals separations between them must shrink by 40% or more as the short, ...

*Topological index

Acute toxicity of benzene derivatives to tadpoles (Rana japonica)". Journal of Molecular Modeling. 12 (3): 306-16. doi:10.1007/ ...

*Organogold chemistry

Norman, R. O. C.; Parr, W. J. E.; Thomas, C. B. (1976). "The reactions of alkynes, cyclopropanes, and benzene derivatives with ...

*Aromatic hydrocarbon

Benzene derivatives have from one to six substituents attached to the central benzene core. Examples of benzene compounds with ... benzene. Aromatic hydrocarbons can be monocyclic (MAH) or polycyclic (PAH). Some non-benzene-based compounds called ... Benzene, C6H6, is the simplest aromatic hydrocarbon, and it was the first one named as such. The nature of its bonding was ... Examples of non-benzene compounds with aromatic properties are furan, a heterocyclic compound with a five-membered ring that ...

*Pyridine

The η6 coordination mode, as occurs in η6 benzene complexes, is observed only in sterically encumbered derivatives that block ... 139 pm for C-C bond in benzene), whereas the carbon-carbon bonds in the pyridine ring have the same 139 pm length as in benzene ... unlike benzene and its derivatives, pyridine is more prone to nucleophilic substitution and metalation of the ring by strong ... benzene, has only one proton signal at 7.27 ppm. The larger chemical shifts of the α- and γ-protons in comparison to benzene ...

*Petasis reaction

1,3,5-trioxygenated benzene derivatives can also be used in lieu of tertiary aromatic amines. Synthesis of iminodicarboxylic ... Many boronic acid derivatives are easy to prepare and with the advent of the Suzuki coupling, a larger number of them are now ... Hong, Z.; Liu, L.; Hsu, C.-C.; Wong, C,-H. (2006). "Three-Step Synthesis of Sialic Acids and Derivatives". Angew. Chem. Int. Ed ... Apart from vinyl boronic acids, aryl boronic acids and other heterocyclic derivatives can also be used in Petasis ...

*Johannes Thiele (chemist)

He also recognized that these deeply colored species were related to but isomeric with benzene derivatives. According to one of ... In 1899 this led to the prediction of the resonance that existed in benzene, and he proposed a resonance structure, by using a ... Benzene.), pages 125-129. Shorter, Edward (2005). A historical dictionary of psychiatry. New York: Oxford University Press. ... With his associate Otto Holzinger, he synthesised an iminodibenzyl nucleus: two benzene rings attached together by a nitrogen ...

*Chloranil

It is used for the aromatization reactions, such as the conversion of cyclohexadienes to the benzene derivatives. Chloranil is ... This test is useful for checking for the presence of proline derivatives. It is also a good test for the successful ...

*Pyromellitic dianhydride

It is prepared by gas-phase oxidation of 1,2,4,5-tetramethylbenzene (or related tetrasubstituted benzene derivatives). An ...

*Thiazole

... s are found in a variety of specialized products, often fused with benzene derivatives, the so-called benzothiazoles. ... also refers to a large family of derivatives. Thiazole itself is a pale yellow liquid with a pyridine-like odor and the ...

*Dalziel Hammick

... which predicts the order of substitution in benzene derivatives. He also developed the Hammick reaction which generates ortho- ...

*MMDA-2

Clare BW (2002). "QSAR of benzene derivatives: comparison of classical descriptors, quantum theoretic parameters and flip ...

*Baudisch reaction

Of the benzene derivatives that do not undergo the Baudisch reaction, aromatic aldehydes tend to form hydroxamic acid or oximes ... Aniline derivatives are converted to a diazo compounds. In years following the work Baudisch and Cronheim did, Konecny and ... Konecny, J. O. (1955). "Hydroxylation of Benzene in Aqueous Solution in the Presence of Hydroxylamine Hydrochloride". J. Am. ... Baudisch, O. (1941). "Preparation of o-Nitrosophenols from Benzene or Other Aromatic Hydrocarbons at Room Temperature". J. Am. ...

*Metal carbonyl

Reppe also discovered the cyclotrimerization and tetramerization of acetylene and its derivatives to benzene and benzene ... Group 8 elements as dianaions resemble neutral group 10 derivatives: [M(CO)4]2− (M = Fe, Ru, Os). Condensed derivatives are ... Group 4 elements with 4 valence electrons are rare, but substituted derivatives of Ti(CO)7 are known. Group 5 elements with 5 ... As demonstrated later, the compound was not a metal carbonyl, but the potassium salt of ´hexahydroxy benzene and the potassium ...

*Halogen dance rearrangement

The halogen dance concept can be extended from benzene derivatives to other aromatic systems as well, for instance furan and ...

*Hammett equation

The equation also holds for reaction rates k of a series of reactions with substituted benzene derivatives: log ⁡ k k 0 = σ ρ ... relationship relating reaction rates and equilibrium constants for many reactions involving benzoic acid derivatives with meta ...

*Benzylidene compounds

... are alkene derivatives of benzene. They are primarily divided into two groups: Styrenes (one benzene) ...

*Electrophilic halogenation

A few types of aromatic compounds, such as phenol, will react without a catalyst, but for typical benzene derivatives with less ... The reaction mechanism for chlorination of benzene is the same as bromination of benzene. Iron(III) bromide and iron(III) ... These work by forming a highly electrophilic complex which is attacked by the benzene ring. ...

*Carbon-hydrogen bond activation

Green, M. L.; Knowles, P. J. (1970). "Formation of a tungsten phenyl hydride derivatives from benzene". J. Chem. Soc. D. 24: ... Pyridine derivatives are commonly used for ortho-selective C-H functionalization. Such reactions use metals like palladium to ... In 1969, Yuzo Fujiwara reported the synthesis of (E)-1,2-diphenylethene from benzene and styrene with Pd(OAc)2 and Cu(OAc)2, a ... The first C-H activation reaction is often attributed to Otto Dimroth, who in 1902, reported that benzene reacted with mercury( ...

*Werner Tochtermann

Strained benzene derivatives (cyclophanes) and ansa compounds L. W. Jenneskens, G. B. M. Kostermans, H. J. Ten Brink, W. H. De ...

*Crumb rubber

... furans and benzene derivatives." Tire brand B was..."found to contain high concentrations of the compounds sulfur dioxide (DOT ...

*Henry Edward Armstrong

... and structural constitution of many naphthalene derivatives in 1881, building on earlier work on benzene derivatives and ... It was in a footnote to an article on that theme in 1890 that his centric formula for benzene first appeared. His six ... Although Armstrong was active in many areas of scientific research, such as the chemistry of naphthalene derivatives, he is ... Armstrong's "centric" model of benzene appears on page 264. Grace's Guide. "Henry Edwardd Armstrong". Grace's Guide to British ...

*Viktor Meyer

... he undertook to continue the lectures on benzene derivatives, and this led him to the discovery of thiophen. In 1885 he was ... Identification of thiophene as a contaminant in benzene derived from coal (1882). Benzene produced by decarboxylation of ... Observation (1892) that ortho-substituted benzoic acid derivatives are esterified with difficulty. This principle is now known ...

*Hexafluorobenzene

In this derivative of benzene all hydrogen atoms have been replaced by fluorine atoms. The technical uses of the compound are ... NaF The reaction of pentafluorophenyl derivatives has been long puzzling for its mechanism. Independent of the substituent, ... The synthetic route proceeds via the reaction of alkali-fluorides with halogenated benzene: C6Cl6 + 6 KF → C6F6 + 6 KCl In the ... The direct synthesis of hexafluorobenzene from benzene and fluorine is not possible. ...
Define Benzene derivatives. Benzene derivatives synonyms, Benzene derivatives pronunciation, Benzene derivatives translation, English dictionary definition of Benzene derivatives. n. A colorless, flammable, toxic, liquid aromatic hydrocarbon, C6H6, derived from petroleum and used in or to manufacture a wide variety of chemical...
Organoselenium compounds have been pointed out as therapeutic agents. In contrast, the potential therapeutic aspects of tellurides have not yet been demonstrated. The present study evaluated the comparative toxicological effects of diphenyl diselenide (PhSe)2 and diphenyl ditelluride (PhTe)2 in mice after in vivo administration. Genotoxicity (as determined by comet assay) and mutagenicicity were used as end-points of toxicity. Subcutaneous administration of high doses of (PhSe)2 or (PhTe)2 (500 μmol/Kg) caused distinct genotoxicity in mice. (PhSe)2 significantly decreased the DNA damage index after 48 and 96 hours of its injection (p|0.05). In contrast, (PhTe) caused a significant increase in DNA damage (p|0.05) after 48 and 96 hours of intoxication. (PhSe)2 did not cause mutagenicity but (PhTe)2 increased the micronuclei frequency, indicating its mutagenic potential. The present study demonstrated that acute in vivo exposure to ditelluride caused genotoxicity in mice, which may be associated with pro
Los Angeles, United State - The report is a brilliant presentation of critical dynamics, regional growth, competition, and other important aspects of the global Ethyl Benzene Market. It provides accurate market figures and statistics including CAGR, revenue, volume, consumption, production, market shares, price, and gross margin. Each regional market studied in the report is carefully analyzed to explore key opportunities and business prospects they are expected to offer in the near future. The authors of the report profile some of the leading names of the global Ethyl Benzene market on the basis of various factors. This equips players with crucial information and data to improve their business tactics and ensure a strong foothold in the global Ethyl Benzene market.. All of the segments shed light upon in the report are examined for their future growth in the global Ethyl Benzene market. The report also shows their current growth in the global Ethyl Benzene market so that players could cash in ...
Chapter 1 - Chapter 1 provides a literature review of the relevant topics for this thesis in organofluorine chemistry: effect of fluorine as a substituent on the molecule, synthesis of C-F bond from C-H bond using electrophilic reagents with discussions of mechanisms. Chapter 2 ― Direct fluorination of electron-rich systems such as alkyl and cyclic saturated ethers using elemental fluorine results in the formation of unexpected products: fluorinated aldal acetáis. Selectfluor™ was also used to prepare these products in good yield, but also to gain information about mechanism. Chapter 3 - Same methodology for fluorination of deactivated benzene derivatives using elemental fluorine was applied and resulted in a selective substitution of hydrogen by fluorine and allowed the synthesis of a diverse collection of polyfunctional monofluorinated aromatic products. Chapter 4 - Fluorination of 1,3- and 1,4-disubstituted benzaldehyde derivatives was studied in the reactions with elemental fluorine and ...
TY - JOUR. T1 - Revisiting Aromaticity and Chemical Bonding of Fluorinated Benzene Derivatives. AU - Torres-Vega, Juan J.. AU - Vásquez-Espinal, Alejandro. AU - Ruiz, Lina. AU - Fernández-Herrera, María A.. AU - Alvarez-Thon, Luis. AU - Merino, Gabriel. AU - Tiznado, William. PY - 2015/6/1. Y1 - 2015/6/1. N2 - The electron delocalization of benzene (C6H6) and hexafluorobenzene (C6F6) was analyzed in terms of the induced magnetic field, nucleus-independent chemical shift (NICS), and ring current strength (RCS). The computed out-of-plane component of the induced magnetic field at a distance (r) greater than or equal to 1.0 Å above the ring center correlates well (R2,0.99) with the RCS value. According to these criteria, fluorination has two effects on the C6 skeleton; concomitantly, the resonant effects diminish the π electron delocalization and the inductive effects decrease the charge density at the ring center and therefore reduce the magnitude of the paratropic current generated in this ...
P.G. Anoaica(1), Emilia Amzoiu(1), L. Giubelan(2) (1) Faculty of Pharmacy, University of Medicine and Pharmacy, Craiova, (2) Faculty of Medicine, University of Medicine and Pharmacy, Craiova, Abstract A series of 24 benzene derivatives are commonly used as solvents or reactants in the chemical process of synthesis. For this reason, a circumstantial study of skin permeability (or biologic membranes) to such classes of substances is enforced. This paper presents a
The invention relates to acylamino(alkyl)benzene derivatives of the general formula ##STR1## in which W represents a group which can be converted into a carboxyl group, or an aldehyde group or an oxymethyl group or their derivatives or also a low molecular weight alkyl group, preferably a methyl group, X represents an aromatic or hetero-aromatic ring system, Y represents a single chemical bond or a hydrocarbon bridge, and Z represents hydrogen or one or even several other substituents, To their preparation and to pharmaceutical compositions containing them. The compounds have blood sugar lowering activity and may be used in the therapy of diabetes mellitus.
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Despite tight market supply, pure benzene main Asia continued to slightly increase on Wednesday. Early morning trade activities were slow; offers for June contract were made at .....
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The present invention provides a process for decomposing a cumene hydroperoxide to produce phenol and acetone. The process utilizes a solid catalyst that can be non-layered or layered. The process includes: (1) introducing a process stream containing cumene hydroperoxide into a reaction vessel; (2) contacting the process stream with catalyst particles to form a process stream; and (3) withdrawing a portion of the product stream from the reactor and recovering phenol and acetone products.
Different concentrations of cherry laurel pulp (0, 5, 10, 15 and 20%) were used to produce tarhana samples. Volatile aromatic compounds and minor mineral content were investigated. Volatile aromatic...
[111 Pages Report] Check for Discount on Global and China Mesitylene Research Report to 2020 report by QYResearch Group. This report studies Mesitylene in Global and China market, focuses...
ZhongLan Industry Co.,Ltd supplying Ethylbenzene Manufacturer with competitive price, high quality and regular basis. Specification of Ethylbenzene Manufacturer Item Specification Appearance Colorless transparent liquid Structure: Molecular Formula: C8H10 Molecular Weight: 106.17… read more →. ...
The metabolism of monoaromatic hydrocarbons by an iron-reducing bacterial enrichment culture originating from diesel-contaminated groundwater was examined using d 7 -propylbenzene as a model hydrocarbon. Sequence analysis of the 16S rDNA gene showed that the dominant part (10 of 10 clones) of the enrichment culture consisted of a bacterium closely related to clones found in benzene-contaminated groundwater and to the iron-reducing β- proteobacterium, Rhodoferax ferrireducens (similarity values were 99.5% and 98.3%, respectively). In degradation studies conducted over 18 weeks, d 7 -propylphenols were detected by gas chromatography-mass spectrometry (GC/MS) as intra-cellular metabolites concomitant with cell growth in the cultures. The amount of propylphenols increased during the exponential growth phase, and by the end of this phase 4 × 10 -14 moles of ferric iron were reduced and 3 × 10 -15 moles propylphenol produced for every cell formed. During the stationary growth phase the cell density was
Fullerenes. Apart from this classification, the reactivity of the organic compounds depends on the functional groups. The functional groups are defined as "specific groups (moieties) of atoms or bonds within molecules that are responsible for the characteristic chemical reactions of those molecules". These functional groups, along with the class of organic compounds, shape the reaction outcomes.. Out of the many functional groups that can be encountered in various levels of chemistry, the organic chemistry study recognizes some of these as the most common functional groups. These are:. Hydrocarbons. Hydrocarbons consist of only carbon and hydrogen as the reactive sites. These can be further classified as alkane, alkene, alkyne and benzene derivatives. The structures of each of these are given below in sequence.. ...
Soil quality - Gas chromatographic quantitative determination of volatile aromatic and halogenated hydrocarbons and selected ethers - Static headspace method
Akkattu Biju and co-workers from CSIR have reported in Org Lett on a multi-component reaction involving a benzyne intermediate. OL paper
1-Bromo-4-propylbenzene 588-93-2 NMR spectrum, 1-Bromo-4-propylbenzene H-NMR spectral analysis, 1-Bromo-4-propylbenzene C-NMR spectral analysis ect.
GAS DETECTOR TUBES provide a simple measurement of chemicals in gas samples. The tubes are pre-calibrated, take only a few minutes to complete sampling, and the concentration is read directly from the length of color stain. Tubes are available for over 150 different chemicals and concentration ranges.The high-quality a
We have studied the enantioselectivity and regioselectivity of ring-hydroxylation and N-desisopropylation of R(+)- and S(-)-propranolol in microsomes from yeast expressing cytochrome P4502D6 (CYP2D6), using both NADPH and molecular oxygen (NADPH/O2) and cumene hydroperoxide-supported reactions. With NADPH/O2-supported reactions, CYP2D6 catalyzed 4- and 5-ring-hydroxylation, as well as N-desisopropylation of propranolol, although Vmax was considerably greater for ring-hydroxylation, compared with N-desisopropylation. The R/S ratios for KM and Vmax were less than unity for all three pathways. In contrast, using cumene hydroperoxide-supported reactions, CYP2D6 catalyzed 4- and 5-ring-hydroxylation, and there was negligible N-desisopropylation of propranolol. The R/S ratio for KM was less than unity, but the R/S ratio for Vmax was close to unity. The cumyl group of cumene hydroperoxide did not seem to be a selective inhibitor of N-desisopropylation, because i) cumyl alcohol (a nonalkylhydroperoxide ...
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice ...
Abstract. Genes involved in anaerobic degradation of the petroleum hydrocarbon ethylbenzene in the denitrifying Azoarcus-like strain EbN1 were identified on a 56-kb DNA contig obtained from shotgun se
(EMAILWIRE.COM, January 12, 2018 ) Cumene market growth is due to growing demand for phenol in various industries like plastics, laminates, and others. Acetone is also another product which is going to drive the market in upcoming years as raw material production. Cumene is isopropyl benzene which...
Aromatics and derivative projects, which are critical to the petrochemical value chain, make up a substantial portion of WorleyParsons project experience, including one of the largest ethlybenzene (EB)/styrene units ever built. Our project experience includes aromatics recovery from olefin pygas, refinery streams and chemical units that process recovered aromatics to make everything from ethyl benzene to phenol-acetone to bisphenol A. WorleyParsons broad expertise in aromatics ranges from small to complex applications. Maximizing the economic benefit from aromatics production- whether refinery or olefin derived-can hugely impact the financial return from a facility. Our aromatics project experience includes: ...
There is provided a process for producing high-purity meta-xylene by converting a hydrocarbon feedstream comprising at least about 5 wt % ethylbenzene and at least about 20 wt % meta-xylene, over a single molecular sieve catalyst under ethylbenzene conversion conditions sufficient to provide a primary product stream depleted of more than 50% of the ethylbenzene present in the feedstream. The process can further comprise stripping benzene and/or toluene by-products from the primary product stream to provide a secondary product stream comprising at least about 75 wt % mixed ortho-xylene and meta-xylene; and splitting the secondary product stream by removing substantially all of the ortho-xylene present therein to provide a tertiary product stream comprising at least about 95 wt % meta-xylene.
Terpenes are volatile aromatic molecules that evaporate easily and readily announce themselves to the nose. Various researchers have emphasized the pharmaco
Terpenes are volatile aromatic molecules that evaporate easily and readily announce themselves to the nose. Various researchers have emphasized the pharmaco
The action of a number of agents, which may be classified as "stabilizers" and "unstabilizers" on the electrical oscillations and after-potentials in the squid giant axon has been examined. The effects on the spike, "positive overshoot," and "potassium potential" were also observed, but where possible concentrations were employed which left these phenomena unaltered.. Veratrine augmented the oscillations and the negative after-potential, particularly with repetitive stimulation. Yohimbine caused a small long lasting positive after-potential and depressed the oscillations, effects also enhanced with repetitive activity. Cocaine and procaine suppressed the oscillations and the negative after-potential but DDT was completely inert. An elevation in the medium calcium depressed the oscillations and the naturally occurring negative after-potential; negative after-potentials induced with veratrine were increased by calcium. A decrease in the potassium augmented the oscillations and the negative ...
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Abstract : Benzene, toluene and p-xylene are derivatives of benzene, generally produced from crude petroleum and have numerous applications in industry. The aim of the present study was to evaluate the impact of biofield treatment on isotopic abundance of these benzene derivatives by gas chromatography-mass spectrometry (GC-MS). Benzene, toluene and p-xylene samples were divided into two parts: control and treatment. Control part was remained as untreated and treatment part was subjected to Mr. Trivedis biofield treatment. Control and treated samples were characterized using GC-MS. GC-MS data revealed that isotopic abundance ratio of 13C/12C or 2H/1H (PM+1/PM) of treated samples were significantly increased from un-substituted to substituted benzene rings (where, PM- primary molecule, PM+1- isotopic molecule either for 13C/12C and/or 2H/1H). The isotopic abundance ratio of 13C/12C or 2H/1H (PM+1/PM) in benzene was decreased significantly by 42.14% as compared to control. However, the isotopic ...
The increase in conductance, which accompanies the spike in the presence of sea water, is followed by a decrease to below the resting level, here designated as the "initial after-impedance," which lasts 3 msec. and is 3 per cent as great as the increase. Treatment with cevadine usually obliterates the latter but leaves the former essentially unaltered. In addition, the alkaloid gives rise to periodic conductance increases followed by a prolonged, exponentially decaying elevated conductance (the "negativity after-impedance") which correspond closely to potential oscillations and to the negative after-potential. These are also only a few per cent of the major conductance change. Veratridine causes a conductance increase which lasts longer and which also conforms closely with earlier after-potential results.. Preliminary calculations indicate that the negativity after-impedance and the negative after-potential may be due to the subsidence of an elevated chloride permeability. However, no ...
The purity of other key intermediate i.e. 4-[2-(3-Ethyl-4-methyl-2-carbonyl pyrrolidine amido) ethyl] benzene sulfonamide (IV) is also not well documented in the literature. US 4,379,785 (EP 031058) reports condensation of crude 4-[2-(3-Ethyl-4-methyl-2-carbonyl pyrrolidine amido) ethyl] benzene sulfonamide (IV) with trans-4-methyl cyclohexyl isocyanate (VIII) to obtain Glimeperide (I). However, using this crude sulfonamide there is always a possibility of getting undesired ortho and meta isomers in Glimepiride. The present invention relates to a purification process of 4-[2-(3-Ethyl-4-methyl-2-carbonyl pyrrolidine amido) ethyl] benzene sulfonamide of Formula (IV) with a mixture of hydrocarbon and alcohol. The hydrocarbon can be aliphatic, alicyclic or aromatic .The hydrocarbon is further selected from hexane, heptane ,cyclohexane, toluene or mixtures thereof preferably, toluene. The alcohol used for crystallization is an aliphatic one,wherein,the carbon chain may be preferably CI to C4. ...
In organic chemistry, the term aromaticity is used to describe a cyclic (ring-shaped), planar (flat) molecule with a ring of resonance bonds that exhibits more stability than other geometric or connective arrangements with the same set of atoms. Aromatic molecules are very stable, and do not break apart easily to react with other substances. Organic compounds that are not aromatic are classified as aliphatic compounds-they might be cyclic, but only aromatic rings have special stability (low reactivity). Since the most common aromatic compounds are derivatives of benzene (an aromatic hydrocarbon common in petroleum and its distillates), the word "aromatic" occasionally refers informally to benzene derivatives, and so it was first defined. Nevertheless, many non-benzene aromatic compounds exist. In living organisms, for example, the most common aromatic rings are the double-ringed bases in RNA and DNA. An aromatic functional group or other substituent is called an aryl group. The earliest use of ...
Objectives-Low exposures to volatile aromatic hydrocarbons and cytogenetic effects in peripheral white blood cells were determined in 25 healthy workers employed in different areas of a styrene production plant in the former German Democratic Republic. The results were compared with 25 healthy unexposed controls matched for age and sex employed...
This study is one of the first population-based studies to observe an association between higher early-life exposure to BTEX compounds and greater use of academic support services among a large cohort of urban children. After adjusting for a number of confounders, elevated HRs for use of academic support services were relatively small in magnitude but consistently observed across exposure metrics for all individual BTEX compounds, as well as summary metrics that indicated high exposure to at least one BTEX compound and high exposure to all BTEX compounds. HRs were slightly larger in magnitude when the population was restricted to children who lived in the same census-tract from birth through third grade, suggesting that results were not due to bias related to residential mobility during childhood. Results did not change when excluding children with imputed blood lead measurements. For example, when estimating the hazard ratio of use of academic support services associated with high benzene ...
Autori: Radu Craciun and Nicu Dulamita. Editorial: Industrial & Engineering Chemistry Research, 38(4), p.1357-1363, 1999.. Rezumat:. Supported MnOx on high surface area SiO2 (300 m2/g) catalysts were successfully used in ethylbenzene oxidative dehydrogenation. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were employed to characterize the structure of fresh and used MnOx/SiO2 catalysts. The MnOx catalysts were prepared using the pore volume impregnation method, with MnO2 loadings varying from 0.7% wt. (Mn/Si = 0.005, atomic ratio) to 30% wt. (Mn/Si = 0.14). The changes in the crystalline structure and dispersion of supported MnOx were related to the precursor/support interaction and the conditions used for catalyst preparation. A possible mechanism for ethylbenzene conversion to styrene on MnOx/SiO2 catalysts is proposed, where lattice oxygen from MnO2 crystalline structure is used for oxidation or oxidative dehydrogenation processes. The high selectivity in styrene (at ...
Resonance in benzene - Resonance form of a compound is nothing but another way of representing Lewis dot structure of that compound. Benzene shows resonance as it has more than one way to place double bonds in the ring. Benzene shows 2 resonating structures. Resonance forms or resonating structures only differ in arrangement of electrons. So, resonance structure of benzene differs only in arrangement of electrons, number of carbon atoms and hydrogen atoms in benzene remain same. Double bonds present in benzene rotates in resonating structures of benzene and provide stability to benzene. Resonance structure shows possible structures of a compound. Resonance structures of benzene ring or benzene ring resonance structure - ...
Hydrogen-Atom Abstraction from Methane by Stoichiometric Vanadium-Silicon Heteronuclear Oxide Cluster Cations | Dr. Xun-Lei Ding; Yan-Xia Zhao; Xiao-Nan Wu; Zhe-Chen Wang; Jia-Bi Ma; Prof. Sheng-Gui He | download | BookSC. Download books for free. Find books
Halasa, A. F., Jasiunas, C., Hsu, B., Henning, S. and Seo, K. S. (2013), Synthesis of random or tapered solution styrene-butadiene copolymers in the presence of sodium dodecylbenzene sulfonate as a polar modifier. J. Appl. Polym. Sci., 127: 2116-2120. doi: 10.1002/app.37720 ...
The mass transfer kinetics of thiourea, phenol, ethylbenzene, propylbenzene, butylbenzene, and amylbenzene were studied on a Gemini-C18 (5 μm, 110 A˚, 375 m2/g) column (150 mm × 4.6 mm) eluted with methanol/water solutions (100, 90, and 20% v/v). Each of the successive steps of the mass transfer of these solutes (axial diffusion, eddy dispersion, film mass transfer resistance, and transparticle mass transfer resistance) was unambiguously measured, using a combination of the peak parking method, the total pore blocking method, and moment analysis, in a wide range of reduced linear velocities. The results obtained offer new insights on the mass transfer kinetics in chromatographic columns. They show first that the eddy dispersion A-term is strongly correlated with the particle porosity. The complex, anastomosed transcolumn flow pattern causes extra band broadening. This transcolumn effect was found to be markedly smaller with porous particles than with nonporous particles of the same size. ...
The use of diaryliodonium salts has recently gained considerable attention in organic synthesis for arylation of organic bases (Merritt et al., 2009; Grushin et al., 2000). The title compound (Fig. 1) is an important representative of such reagents. In the molecule of the compound, the iodine atom lies almost in the plane of both attached benzene rings with r.m.s. deviations of 0.012 (2) Å and 0.028 (1) Å from the C1-C6 and C7-C12 mean planes respectively. The dihedral angle between the rings of the biphenyl group is 65.6 (1)°. The ring of the mesitylene group is inclined to the phenyl rings of the biphenyl group by 93.9 (2)° (for fluorobenzene ring) and 22.4 (2)° (for toluene ring). Extremely short intermolecular I···O contacts [2.93 (5) and 2.86 (6) Å] occur, due to strong electrostatic interactions between the I atom and two adjacent trifluoromethanesulfonate counter-ions. There are also C-H···F and C-H···π hydrogen bonds present (contact distances are shown in Table 1), which ...
The source of problems can be from a multitude of different areas in an analytical system. With our indepth expertise in gas chromatography, liquid chromatography, mass spectrometry, spectroscopy and related techniques we can identify the problem by considering every aspect of your system, many of which people from other backgrounds may not consider.
12 matching references were found. Chylinski, K.; Fras, Z.; Malanowski, S.K., Vapor-Liquid Equilibrium in Phenol + 2-Ethoxyethanol at 363.15 to 383.15 K, J. Chem. Eng. Data, 2001, 46, 1, 29-33, https://doi.org/10.1021/je0001072 . [all data] Chylinski, K., Isothermal compressibilities and excess molar volumes of {xCH3C(CH3)2CH2CH( CH3)CH3 + (1 - x)cis-C10H18} at the temperature T = 298.15 K; and of {xCH3 C(CH3)2CH2CH(CH3)CH3 + (1 - x)trans-C10H18} at T, J. Chem. Thermodyn., 1994, 26, 15-21. [all data] Rogalski, M.; Chylinski, K.; Wisniewska, B., liquid-vapor equilibia of quinoline + trans-decalin, + decane, or + butylbenzene, Int. DATA Ser., Sel. Data Mixtures, Ser. A, 1993, 21, 318-26. [all data] Chylinski, K.; Saville, G.; Wakeham, W.A., Vapor-liquid equilibria (VLE) in hydrocarbons of greatly differing volatilities, Fluid Phase Equilib., 1993, 82, 131-9. [all data] Chylinski, K.; Gregorowicz, J., Liquid-phase PVT data of alkylbenzenes, Fluid Phase Equilib., 1991, 64, 237-49. [all data] ...
D4337 - 89(2017) Standard Test Methods for Analysis of Linear Detergent Alkylates , linear alkylbenzenes, linear detergent alkylates ,,
Mylar(R) polyester film is an exceptionally strong, durable, transparent film with high tensile, tear and impact strength. It is moisture and vapor resistant and is unaffected by, and does not transmit oils, greases and volatile aromatics. It not only retains these properties but remains tough and voltage stable from -80 DegreesF. to over 300 DegreesF. Mylar(R) has one of the highest dielectric strengths available in a tube form. Even at its top rated service temperature of 150 DegreesC., its dielectric strength is still 5,000 VPM. It is also completely inert to water and therefore offers excellent dimensional stability with no reduction in dielectric strength that may be caused by moisture absorption in other materials. Since this is a spiral wound product it is not recommended for pressure applications however liquids and gasses may conveyed through it. Typical uses include coil forms, capacitor covers, electrical insulators, and all applications where superior moisture resistance and ...
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A cunningly modified ring of boron and nitrogen atoms is the closest inorganic analog of benzene yet created, its creators say (Angew. Chem., Int. Ed. 2020, DOI: 10.1002/anie.201915790). The first inorganic version of benzene was reported almost a century ago. Borazine (B3N3H6) contains a flat six-membered ring and a delocalized cloud of six π electrons but is only moderately aromatic. Since borazines discovery, a handful of other inorganic benzenes have been created, none of which seem to have much aromaticity. Rei Kinjo and Kei Ota at Nanyang Technological University have now created a 1,4,2,3,5,6-diazatetraborinine derivative that is much more benzene-like than its predecessors. The blue solid is a valence isomer of benzene, with each ring atom bearing only one substituent. Unlike borazines alternating pattern of elements, diazatetraborinines ring includes four boron atoms that sit in pairs and bond to either chlorine or trimethylphosphine. X-ray crystallography shows that the molecule is ...
Import Data And Price Of Mono Chloro Benzene , www.eximpulse.com Eximpulse Services will provide you the latest and relevant market intelligence reports of Mono Chloro Benzene Import Data. You can find live data of maximum number of ports of India which is based on updated shipment data of Indian Customs. Only previous two days data will be seen on website. You can use this Mono Chloro Benzene import data for multiple kinds of analysis; lets say Import price, Quantity, market scenarios, Price trends, Duty optimization and many more. You can go through some of the sample shipment records for Mono Chloro Benzene import data mentioned above. Here on Eximpulse Services you will get all kind of free sample as well as detailed reports of Export/ Import data as per your requirement. To get in touch for any kind of enquiry related to free sample or detailed report contact on +91-120-408-4957, +91-120-408-4958,+91-120-428-4019.. Data post 2012 as per Notification No.18/2012 - Customs(N.T.) and does not ...
Where did I say no external factors? It is all external factors. It is the environment. It is the environment (full of molecules just laying around) bumping into molecules and getting hooked up. It is carbon with its giving and receiving +4/-4 outer electron shell that started partying with all the other molecules. It is probably pockets of carbon with atmospheric nitrogen getting together to form the first amino acid. Then that amino acid bumped into another amino acid, and a baby protein was made (and at a chemical Rave party a really long polypeptide was made and formed a 3D protein complex). Then next was a polypeptide of RNA, along with the protein polypeptide. Now the real question is when did proteins and RNA/DNA find a way to start reproducing oneself ...
Press Release issued May 28, 2015: The formation of amino acids or proteins within the cells of living organisms that takes place after gene expression is referred as protein expression. Gene expression utilizes DNA template for mRNA formation during transcription, which is thereafter utilized as a template for protein polypeptide formation of amino acids during the translation process. Protein expression is a vital process in which numerous important types of proteins are synthesized and modified, where recombinant proteins can also be synthesized. These synthesized, modified and recombinant protein types find a wide range of commercial applications.
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Used in the production of phenol, acetone, and alpha-methylstyrene; solvent. Associated with tobacco: reported either as a natural component of tobacco, pyrolysis product (in tobacco smoke), or additive for one or more types of tobacco products.. ...
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.. ...
Benzene is a toxic chemical and one of the 20 most widely used chemicals in the U.S. Exposure to Benzene increases your risk of developing cancer and a host of
This report studies the global Heavy Aklyl Benzenes (HAB) market status and forecast, categorizes the global Heavy Aklyl Benzenes (HAB) market size (value & volume) by key players, type, application, and region. This report focuses on the top pla
Boc Sciences offers cas 85895-82-5 (1,2,3-Trimethylbut-3-enyl)benzene in bulk,please inquire us to get a quote for 85895-82-5 (1,2,3-Trimethylbut-3-enyl)benzene.
As levels of atmospheric nitric oxide decline rapidly due to air quality regulations, North American cities may soon experience higher levels of airborne organic hydroperoxides ...
As levels of atmospheric nitric oxide decline rapidly due to air quality regulations, North American cities may soon experience higher levels of airborne organic hydroperoxides ...
As levels of atmospheric nitric oxide decline rapidly due to air quality regulations, North American cities may soon experience higher levels of airborne organic hydroperoxides ...
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Basically, three problems are involved in the substitution reactions of aromatic compounds: (a) proof of the structures of the possible isomers, o, m, p, that are formed; (b) the percentage of each isomer formed, if the product is a mixture; and (c) the reactivity of the compound being substituted relative to some standard substance, usually benzene ...
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Benzene is a common chemical and a major health risk to your workforce. Heres what you need to know to keep your employees safe from harm.
Clifton water officials want customers to know they started testing the water about a month ago, and havent detected any concentrations of benzene.
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Kajiab Kitab Tuhfatul Athfal Pengarang : Syeikh Sulaiman Al Jamzury Pengisi : Ustaz Abdul Habib Luthfi Tanggal : 14 November 2016 Tempat : Mahad Jawi فِي الْمِثْلَيْنِ وَالْمُتَقَارِبَيْنِ وَالْمُتَجَانِسَيْنِ BAB IDGHOM (MISLAIYN, MUTAQORIBAIYN, MUTAJANISAIYN) إِنْ فِي الصِّفَاتِ وَالمَخَـارِجِ اتَّفَـقْ حَـرْفَانِ فَالْمِثْـلاَنِ فِـيهِـمَا ... ...
ResearchMoz.us provides new market research report on " Cumene Global Market to 2020 - Phenol Derivatives from China Continue to Drive Global Demand, Further Increasing Regional Dominance" . GBI Researchs report, "Cumene Global Market to 2020 - Phenol Derivatives from China Continue to Drive Global Demand, Further Increasing Regional Dominance", is an in-depth report focusing on the demand side of the global cumene industry. The report provides the reader with detailed analysis and forecasts regarding the major economic and market trends affecting global cumene demand in all major regions of the world. It also provides analysis and description of the major drivers and restraints affecting cumene demand in various regions. Global cumene demand is assessed in terms of end-user segments, price and competitive landscape, at both the regional and national level. Overall, the report presents a comprehensive analysis of the global cumene market, covering all major parameters. The report has been ...
Essential oils are naturally occurring, volatile aromatic compounds that are found in the seeds, bark, stems, roots, flowers, and other parts of plants. They are incredibly potent and fragrant giving plants their distinctive smell, such as a rose. They protect plants and play a role in plant pollination. For a long time, essential oils have aided in natural healing for humans and animals.. Volatile aromatic compounds are small organic molecules that tend to change quickly from their solid or liquid state to a gas at room temperature. Volatile- meaning they change state quickly. The physical and chemical properties of the volatile aromatic compounds that compose essential oils allow them to quickly move through the air and directly interact with the olfactory sensors in the nose, which is why essential oil is commonly used for aromatherapy for dogs.. Over 3,000 varieties of volatile aromatic compounds have been identified to date. The nature of an essential oil varies from plant to plant, within ...
The transformation of benzene and a series of alkylbenzenes was studied in anoxic groundwater of a shallow glacial-outwash aquifer near Bemidji, Minnesota, U.S.A. Monoaromatic hydrocarbons, the most water-soluble components of crude oil, were transported downgradient of an oil spill, forming a plume of contaminated groundwater. Organic acids that were not original components of the oil were identified in the anoxic groundwater. The highest concentrations of these oxidized organic compounds were found in the anoxic plume where a decrease in concentrations of structurally related alkylbenzenes was observed. These results suggest that biological transformation of benzene and alkylbenzenes to organic acid intermediates may be an important attenuation process in anoxic environments. The transformation of a complex mixture of hydrocarbons to a series of corresponding oxidation products in an anoxic subsurface environment provides new insight into in situ anaerobic degradation processes. ?? 1990 Springer
In this study, synthesis of acetophenone as a widely used industrial compound was investigated by liquid phase oxidation of ethylbenzene with TBHP as an oxidant in acetonitrile over Pd/g-C3N4-rGO as a recyclable catalyst. The hybrid composite of graphitic carbon nitride (g-C3N4) and reduced graphene oxide (r
2011. López-Ruiz Heraclio,* Cortés-Hernández Mayra, Rojas- Lima Susana, Höpfl Herbert. Synthesis of nitrogen-, oxygen- and sulphur-containing tripodal ligands with a trimethylbenzene core. Journal of the Mexican Chemical Society, 55(3), 168-175. (2011). ...
United States Patent C 3,766,288 PROCESS FOR PREPARATION OF ALKENYLBENZENE Takeo Shima, Takanori Urasaki, and Iwao Omae, Iwakuni, Japan, assignors to Teiiin Limited, Osaka, Ja an N3 Drawing. Filed Mar. 27, 1972, Ser. No. 238,584 Claims priority, application Japan, Mar. 29, 1971, 46/ 18,602 Int. Cl. C07c 3/52 U.S. Cl. 260-668 B 9 Claims ABSTRACT OF THE DISCLOSURE A process for preparing alkenylbenzenes, which comprises reacting alkylbenzenes with 1,3-butadiene at an elevated temperature in the presence of an alkali metal catalyst in the substantial absence of oxygen and mois ture, wherein such catalyst is composed of (1) 0.005 to 0.4% by weight, based on the alkylbenzene, of metallic potassium, and (2) metallic sodium in an amount expressed by the following equation (4.1x+2.0) ;Na;(0.073x+0.05) wherein x represents the amount in weight percent of the metallic potassium. This invention relates to an improved process for preparing alkenylbenzenes by reacting alkylbenzenes with 1,3- butadiene in the ...
Benzene naturally occurs in crude oil and is used to make plastics, resins, synthetic fibers, dyes, detergents, additives and coatings, and pesticides. It is a widely used aromatic hydrocarbon which constitutes 1-2% of gasoline and other fuels. While benzene is a very useful hydrocarbon that offers diverse applications, it is also a known human carcinogen. Occupational Safety and Health Administration (OSHA) lists the PEL-TWA at 1 ppm, and the American Conference of Governmental Industrial Hygienists (ACGIH) have the TLV-TWA at 0.5 ppm. Industry requires a means to measure low concentrations of benzene (typically below 1 ppm) in the presence of various hydrocarbons, often 100 to 1000X the concentration of benzene.. Uniphos Envirotronic Inc., a recognized leader in colorimetric detection tubes, has developed a PID pre-filter tube for selective determination of benzene in air containing a mixture of volatile organic compounds (e.g. toluene, xylene, ethyl benzene, octane, etc.). The measuring range ...
EWGs Tap Water Database Ethylbenzene results for Fultonville Village Public Water Supply | Ethylbenzene. Find out what is in your tap water
Two types of single-site heterogeneous catalysts have been designed so as to facilitate either the side-chain oxidation or ring-hydroxylation of toluene in O2 (solvent-free) or by employing aqueous (H2O2) or organic (cumene hydroperoxide) hydroperoxides in high yield. The use of H2O2 and cumene hydroperoxide in particular, facilitates the ring-hydroxylation of toluene when zeolite-encapsulated metal complexes, such as perhalogenated or tetra-nitro-substituted phthalocyanines, are used as catalysts. Nanoporous, redox molecular sieves, display a higher tendency for the side-chain oxidation of toluene with air as an oxidant, with benzoic acid as the predominant product.. Full text not available from this repository.. ...
Benzene is an organic chemical compoond wi the molecular formula C6H6. The benzene molecule is componed o sax caurbon atoms jynt in a ring wi ane hydrogen atom attached tae ilk. As it conteens anerly caurbon an hydrogen atoms, benzene is clessed as a hydrocaurbon. Benzene is a naitural constituent o crude ile an is ane o the elementar petrochemicals. Due tae the cyclic conteenous pi bond atween the caurbon atoms, benzene is clessed as an aromatic hydrocarbon, the seicont [n]-annulene ([6]-annulene). It is whiles abbreviatit PhH. Benzene is a colourless an heichly flammable liquid wi a sweet smell, an is responsible for the aroma aroond petrol stations. It is uised primarily as a precursor tae the manufacture o chemicals wi mair complex structur, uic as ethylbenzene an cumene, o that billions o kilogrammes are produced annually. As benzene haes a heich octane nummer, aromatic derivatives lik toluene an xylene teepically comprise up tae 25% o petrol. Benzene itsel haes been leemitit tae less than ...
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Method miniaturisation is the squeezing of as many instrumental and analytical parameters as possible to optimise efficiency. Variables that can be examined include extraction solvent, extraction technique, injection onto the column, separation on column, quantification via the detector and finally the cycle time of one analytical run. As we strive to make the method more
see article for more examples. Abstract. A mild, complete hydrogenation of aromatic rings catalyzed by heterogeneous 10% Rh/C proceeds at 80 C in water under 5 atm of H2 pressure and is applicable to the hydrogenation of various carbon and heteroaromatic compounds such as alkylbenzenes, biphenyls, pyridines and furans.. ...
Meyer D.J., Coles B., Pemble S.E., Gilmore K.S., Fraser G.M., Ketterer B.. Glutathione transferases (GSTs) of a novel class, which it is proposed to term Theta, were purified from rat and human liver. Two, named GST 5-5 and GST 12-12, were obtained from the rat, and one, named GST theta, was from the human. Unlike other mammalian GSTs they lack activity towards 1-chloro-2,4-dinitrobenzene and are not retained by GSH affinity matrices. Only GST 5-5 retains full activity during purification, and its activities towards the substrates 1,2-epoxy-3-(p-nitrophenoxy)propane, p-nitrobenzyl chloride, p-nitrophenethyl bromide, cumene hydroperoxide, dichloromethane and DNA hydroperoxide are 185, 86, 67, 42, 11 and 0.03 mumol/min per mg of protein respectively. Earlier preparations of GST 5-5 or GST E were probably a mixture of GST 5-5 and GST 12-12, which was largely inactive, and may also have been contaminated by less than 1% with another GSH peroxidase of far greater activity. Partial analysis of primary ...
The title compound, C(20)H(18), has two crystallographically independent molecules in the asymmetric unit. The phenyl substituents of molecule A are twisted away from the plane defined by the central benzene ring by 131.8 (2) and -52.7 (3)degrees. The phenyl substituents of molecule B are twisted by -133.3 (2) and 50.9 (3)degrees. Each molecule is stabilized by a pair of intraMolecular C(aryl, sp(2))-H center dot center dot center dot pi interactions, as well as by several interMolecular C(methyl, sp(3))-H center dot center dot center dot pi interactions.
UpMarketResearch.com, has added the latest research on Sodium Dodecyl Benzene Sulphonate SDBS Market, which offers a concise outline of the market valuation, industry size, SWOT analysis, revenue approximation, and the regional outlook of this business vertical. The report precisely features the key opportunities and challenges faced by contenders of this industry and presents the existing competitive setting and corporate strategies enforced by the Sodium Dodecyl Benzene Sulphonate SDBS Market players.. As per the Sodium Dodecyl Benzene Sulphonate SDBS Market report, this industry is predicted to grow substantial returns by the end of the forecast duration, recording a profitable yearly growth in the upcoming years. Shedding light on brief of this industry, the report offers considerable details concerning complete valuation of the market as well as detailed analysis of the Sodium Dodecyl Benzene Sulphonate SDBS Market along with existing growth opportunities in the business vertical.. Request ...
Benzene. Computer model of a molecule of benzene. Atoms are represented as spheres and are colour- coded: carbon (blue) and hydrogen (gold). Benzene is a highly flammable colourless liquid with a characteristic smell. It is obtained commercially from petroleum. Benzene is used as an additive in petrol, to manufacture other chemicals, and as a solvent for many simple organic compounds. Benzene is a carcinogen, with long-term exposure causing leukaemias (cancers of blood cells). - Stock Image A705/0072
Manufacturing Science and Technology, AEMT2011: Synthesis, Properties and Application in Optical Memory of a Photochromic Diarylethene Based on Benzene Ring
Autori: Breunig, H.J.; Haddad, N.; Lork, E.; Mehring, M.; Mügge, C.; Nolde, C.; Rat, C.I.; Schürmann. Editorial: Organometallics, 28, p.1202-, 2009.. Rezumat:. Cuvinte cheie: Bismuth, m-Terphenyl, X-ray structure. URL: http://dx.doi.org/10.1021/om800934c. ...
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Researchers from Arizona State and Tsinghua Universities achieved a room-temperature CMOS laser using a molybdenum ditelluride monolayer over a silicon cavity.
Find quality suppliers and manufacturers of 21895-16-9(Benzene, 1-methyl-3-[(4-methylphenyl)methyl]-) for price inquiry. where to buy 21895-16-9(Benzene, 1-methyl-3-[(4-methylphenyl)methyl]-).Also offer free database of 21895-16-9(Benzene, 1-methyl-3-[(4-methylphenyl)methyl]-) including MSDS sheet(poisoning, toxicity, hazards and safety),chemical properties,Formula, density and structure, solution etc.
Catalytic dealkylation of alkylaromatic compounds. XIII. Kinetics of hydrogenolytic dealkylation of isopropylbenzene on a nickel ...
Find quality suppliers and manufacturers of 494-99-5(Benzene,1,2-dimethoxy-4-methyl-) for price inquiry. where to buy 494-99-5(Benzene,1,2-dimethoxy-4-methyl-).Also offer free database of 494-99-5(Benzene,1,2-dimethoxy-4-methyl-) including MSDS sheet(poisoning, toxicity, hazards and safety),chemical properties,Formula, density and structure, solution etc.
The phenol market is anticipated to grow at a robust rate throughout the forecast period. APEJ is the largest market and has the greatest potential in the global phenol market.
... , Search 1-BROMO-4-(2,2,2-TRIFLUOROETHOXY)BENZENE Synthesis route and MSDS, CAS 106854-77-7 Synthesis Route and NMR Spectrum, 106854-77-7 Precursor and Downstream Products
TY - JOUR. T1 - MECHANISM OF POSITRONIUM FORMATION IN MIXTURES OF FLUORINATED BENZENES AND n-HEXANE.. AU - Zhang, Zhicheng. AU - Ito, Yasuo. AU - Washio, Masakazu. AU - Tabata, Yoneho. PY - 1987/12/1. Y1 - 1987/12/1. N2 - Positronium yield (I//3) in binary mixtures of benzene derivatives (p-difluorobenzene, 1,2,4,5-tetrafluorobenzene, pentafluorobenzene, perfluorobenzene and p-xylene) in n-hexane has been measured. As additives all of the aromatic compounds have been found to enhance Ps yield in n-hexane, but the effect was unexpectedly smaller for 1,2,4,5-C//6H//2F//4. It is proposed that there are at least three processes which lead to the enhancement: anti-recombination by scavenging excess electrons, anti-recombination by scavenging positive holes, and electron abstraction from excited molecular states. Addition of a small amount of n-hexane in the fluorinated benzenes resulted in a decrease in the Ps yield to a different degree which strongly depended on the number of fluorine atoms ...
Volatile fatty acids produced in Robertsons cooked meat medium by a range of clinically relevant anaerobes were compared by gas liquid chromatography with those produced in blood agar. The same volatile fatty acid profiles were obtained in both media, although the concentration of acids was lower in blood agar. We conclude that detection of volatile fatty acids from a pure culture of an organism on solid medium is practicable and offers advantages over the conventional technique.. ...
MaletaCD is Distillation Systems Suppliers and Recovery Ether, Ether, Propylene, Tall Oil, Propanol, Hexane, Formalin, Aniline, Fuel Oil, Crude Oil, Naphthalene, Cyclohexane, Butyl Acetate, Ethyl benzene, Turpentine, Methyl acetate, Diesel fractional, Industrial solvent, Recovery Distillation System Equipment Methanol, Acetone, Ethyl benzene Recycle, Propylene, NMP Recycler, DMF Solvent, Acetaldehyde, Ethylene Glycol, Propylene, Methyl Ethyl Ketone and Methyl Isobutyl Ketone.
Pseudomonas putida Idaho utilizes toluene, m-xylene, p-xylene, 1,2,4-trimethylbenzene, and 3-ethyltoluene as growth substrates when these hydrocarbons are provided in a two-phase system at 5 to 50% (vol/vol). Growth also occurs on Luria-Bertani medium in the presence of a wide range of organic solvents. The ability of the organism to grow in the presence of organic solvents is correlated with the logarithm of the octanol-water partition coefficient, with dimethyl-phthalate (log P(OCT) = 2.3) being the most polar solvent tolerated. During growth with p-xylene (20% [vol/vol]), there was an initial lag period accompanied by cell death, which was followed by a period of exponential growth. The stationary phase of growth was characterized by a dramatic decrease in cell viability, although cell dry weight and turbidity measurements slowly increased. Electron micrographs revealed that during growth in the presence of p-xylene, the outer cell membrane becomes convoluted and membrane fragments are shed ...
Human Colon Cancer Stem Cell Culture Extra-cellular Differentiation Matrix is essential for Differentiation of Human Colon Cancer Stem Cell Cultures. This product requires Human Colon Cancer Stem Cell Culture Media Cat#M36112-39 and Cells Cat# 36112-39. Also available Products ...
The aerobic biodegradation of methyl tert-butyl ether (MTBE), a widely used fuel oxygenate, was investigated using an innovative pilot-scale biomass-retaining bioreactor called a Biomass Concentrator Reactor (BCR). The BCR was developed based on the porous pot reactor design that proved effective in remediating co-mingled groundwater contaminated with MTBE, gasoline hydrocarbons (benzene, toluene, ethyl benzene, and p-xylene), and several polycyclic aromatic hydrocarbons (PAHs). The BCR was operated for approximately five years treating flow rates as high as 5000 L/d of dechlorinated tap water spiked with MTBE alone, MTBE + BTEX, and MTBE + BTEX + other gasoline oxygenates (di-isopropyl ether, tert-amyl methyl ether, tert-amyl alcohol, and ethyl tert-butyl ether). The bioreactor affected excellent removal of all the aforementioned contaminants throughout the study, with effluent concentrations always lower than the 5 µg/L Drinking Water advisory set for MTBE in California. The BCR proved its ...
Plant MADS proteins play critical roles in vegetative and reproductive development. DNA binding and yeast three-hybrid assays suggest that plant MADS proteins function as dimers or multimers. However, little is known about how plant MADS proteins interact with one another. K domain is specific to plant MADS proteins. Three putative amphipathic α-helices, referred to as K1, K2, and K3, are encoded in the K domain. Two MADS proteins, APETALA3 (AP3) and PISTILLATA (PI), are required for petal and stamen development in Arabidopsis. Conserved hydrophobic amino acids in K1, K2 and the region between K1 and K2 are demonstrated to be important for the strength of AP3/PI interaction. Specifically, K1 mediates the AP3/PI interaction in a manner similar to a leucine zipper motif. K1 is proposed to be the key determinant for forming the specific AP3/PI heterodimer. Features of the AP3/PI interaction should be readily applicable to other plant MADS proteins, since amino acids important for the AP3/PI ...

Benzene derivatives - definition of Benzene derivatives by The Free DictionaryBenzene derivatives - definition of Benzene derivatives by The Free Dictionary

Benzene derivatives synonyms, Benzene derivatives pronunciation, Benzene derivatives translation, English dictionary definition ... of Benzene derivatives. n. A colorless, flammable, toxic, liquid aromatic hydrocarbon, C6H6, derived from petroleum and used in ... benzene. (redirected from Benzene derivatives). Also found in: Thesaurus, Medical, Encyclopedia.. Related to Benzene ... Benzene derivatives - definition of Benzene derivatives by The Free Dictionary https://www.thefreedictionary.com/Benzene+ ...
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Benzene Derivatives Produced by Fusarium Graminearum | SpringerLinkBenzene Derivatives Produced by Fusarium Graminearum | SpringerLink

Using NMR spectroscopy benzene derivatives were detected in mycelia of Fusarium graminearum, a pathogen of wheat and maize. In ... no study found benzene derivatives to be the cancerous agents in F. graminearum. In this study we detected benzene derivatives ... Using NMR spectroscopy benzene derivatives were detected in mycelia of Fusarium graminearum, a pathogen of wheat and maize. In ... Fusarium graminearum benzene derivatives nuclear magnetic resonance This is a preview of subscription content, log in to check ...
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Programmed synthesis towards multi-substituted benzene derivativesProgrammed synthesis towards multi-substituted benzene derivatives

University and the JST-ERATO Project have developed a new method to accomplish the programmed synthesis of benzene derivatives ... Benzene is one of the most common structures in pharmaceuticals and multi-substituted benzene derivatives are found in many ... Programmed synthesis towards multi-substituted benzene derivatives. by Nagoya University Programmed synthesis of multi- ... Despite being highly useful, multi-substituted benzene derivatives are rather difficult to synthesize due to the lack of ...
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Benzene Derivatives - Exposure Studies | CTDBenzene Derivatives - Exposure Studies | CTD

Benzene and toluene exposures were determined in part by the degree of contact with glues, the benzene and toluene content of ... 1,1,1-trichloroethane , 2-xylene , 3-xylene , 4-dichlorobenzene , 4-xylene , Benzene , Carbon Tetrachloride , ethylbenzene , ... 1,1,1-trichloroethane , 2-xylene , 3-xylene , 4-dichlorobenzene , 4-xylene , Benzene , Carbon Tetrachloride , ethylbenzene , ... 1,1,1-trichloroethane , 2,2,4-trimethylpentane , 3-xylene , 4-xylene , Acetone , Benzene , chlorobenzene , ethyl acetate , ...
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Benzene Derivatives: The Mohr Synthesis of Ilicicolinic AcidBenzene Derivatives: The Mohr Synthesis of Ilicicolinic Acid

... Dong Li of the Jingchu University of Technology devised ( ... The norbornene-mediated Pd-catalyzed cascade functionalization of benzene derivatives established (Synthesis, 1996, 769, ; ...
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Asia : Demand for benzene derivatives expected to fall - Textile News AsiaAsia : Demand for benzene derivatives expected to fall - Textile News Asia

... pure benzene main Asia continued to slightly increase on Wednesday. Early morning trade activities were slow; offers for June ... Commenting on the outlook of the market, demand for pure benzene derivatives from downstream market are expected to decline. ... In recent weeks, prices of Benzene have shot up due to a supply shortage, as Asian benzene producers had reduced their plant ... March benzene exports were 14,563 tons, representing a year-on-year decline of 73 percent. March benzene exports to China were ...
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US4158063A - Acylamino(alkyl)benzene derivatives and process for preparing them 
        - Google PatentsUS4158063A - Acylamino(alkyl)benzene derivatives and process for preparing them - Google Patents

... benzene derivatives of the general formula ##STR1## in which W represents a group which can be converted into a carboxyl group ... or an aldehyde group or an oxymethyl group or their derivatives or also a low molecular weight alkyl group, preferably a methyl ... benzene derivatives and process for preparing them - Google Patents. Acylamino(alkyl)benzene derivatives and process for ... Acylamino (alkyl) benzene derivatives and process for their manufacture Publications (1). Publication Number. Publication Date ...
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Benzene & Derivatives  Products Directory offers  From Global Suppliers and ManufacturersBenzene & Derivatives Products Directory offers From Global Suppliers and Manufacturers

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Applied Sciences | Free Full-Text | Effect of Hydrophobicity on the Self-Assembly Behavior of Urea Benzene Derivatives in...Applied Sciences | Free Full-Text | Effect of Hydrophobicity on the Self-Assembly Behavior of Urea Benzene Derivatives in...

Urea benzene derivatives (UBD) with amphiphilic side chains showed self-assembly behavior in aqueous solution to form ... Urea benzene derivatives (UBD) with amphiphilic side chains showed self-assembly behavior in aqueous solution to form ... Effect of Hydrophobicity on the Self-Assembly Behavior of Urea Benzene Derivatives in Aqueous Solution. Yuna Okamoto 1. ... "Effect of Hydrophobicity on the Self-Assembly Behavior of Urea Benzene Derivatives in Aqueous Solution." Appl. Sci. 8, no. 7: ...
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Regioselective Platinum Catalyzed β-Hydrosilylation of Allylic Benzene Derivatives with Cyclic Siloxane D4 H | Bentham ScienceRegioselective Platinum Catalyzed β-Hydrosilylation of Allylic Benzene Derivatives with Cyclic Siloxane D4 H | Bentham Science

Regioselective Platinum Catalyzed β-Hydrosilylation of Allylic Benzene Derivatives with Cyclic Siloxane D4 H. Author(s): ... Title: Regioselective Platinum Catalyzed β-Hydrosilylation of Allylic Benzene Derivatives with Cyclic Siloxane D4 H ... Regioselective Platinum Catalyzed β-Hydrosilylation of Allylic Benzene Derivatives with Cyclic Siloxane D4 H", Letters in ... Keywords:Allylbenzene derivatives, Karstedts-catalyst, Hydrosilylation, Siloxane D4 H, Platinum catalyst, infrared, hydrides, ...
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Electrophilic fluorinatíon of ethers and deactivated benzene derivatives - Durham e-ThesesElectrophilic fluorinatíon of ethers and deactivated benzene derivatives - Durham e-Theses

Trmčić, Jelena (2005) Electrophilic fluorinatíon of ethers and deactivated benzene derivatives. Doctoral thesis, Durham ... Chapter 3 - Same methodology for fluorination of deactivated benzene derivatives using elemental fluorine was applied and ... Chapter 4 - Fluorination of 1,3- and 1,4-disubstituted benzaldehyde derivatives was studied in the reactions with elemental ...
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Synthesis, Characterization and Antibacterial Activity of New 1,2- and 1,4-Bis(N -Substituted Thioureido)benzene DerivativesSynthesis, Characterization and Antibacterial Activity of New 1,2- and 1,4-Bis(N' -Substituted Thioureido)benzene Derivatives

Synthesis of two series of 1,2- and 1,4-bis(thioureido)benzene derivatives was accomplished by the treatment of corresponding ... benzene Derivatives. S.Afr.j.chem. (Online) [online]. 2013, vol.66, pp.273-278. ISSN 1996-840X. ...
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Benzene DerivativesBenzene Derivatives

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Argus Benzene and Derivatives | Argus MediaArgus Benzene and Derivatives | Argus Media

Argus Benzene and Derivatives gives you access to leading benzene and derivatives contract and spot benchmarks, global industry ... ARGUS Benzene and Derivatives. The Argus Benzene and Derivatives service gives you access to leading benzene and derivatives ... Linkages to key feedstocks: Do not just focus on benzene, see how feedstocks such as naphtha and NGLs play a role in your ... Strong global coverage in a single report: Count on a consistent global perspective of benzene supply and demand that affects ...
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Argus Benzene and Derivatives | Argus MediaArgus Benzene and Derivatives | Argus Media

Argus Benzene and Derivatives gives you access to leading benzene and derivatives contract and spot benchmarks, global industry ... ARGUS Benzene and Derivatives. The Argus Benzene and Derivatives service gives you access to leading benzene and derivatives ... Linkages to key feedstocks: Do not just focus on benzene, see how feedstocks such as naphtha and NGLs play a role in your ... Strong global coverage in a single report: Count on a consistent global perspective of benzene supply and demand that affects ...
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Aromatic Fluorides - Benzene DerivativesAromatic Fluorides - Benzene Derivatives

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Benzene and Derivatives Assignment HelpBenzene and Derivatives Assignment Help

Benzene and Derivatives help are available at assignenthelp.net. Assignment, project, homework help are also offered by ... Online tutorial for Benzene and Derivatives is also available.. Features of Benzene and derivatives:. *Benzene does react with ... Benzene and Derivatives Assignment Help. Introduction to Benzene and Derivatives:. Benzene (C6H6) is molecules which consist of ... To Schedule a Benzene and Derivatives tutoring session Live chat. To submit Benzene and Derivatives assignment click here ...
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Benzene   DerivativesBenzene Derivatives

A series of derivatives of the natural sesquiterpene lactones alantolactone (1) and isoalantolactone (2) was prepared. The a- ... Ltd LINEAR ALKYL BENZENE SULPHONIC ACID (LABSA) Product Identification: CAS No : 68584-22-5 Product Specifications: ... Read ... 8 ACID SLURRY (ALKYL BENZENE SULPHONATE) The present strategy employed for introducing a detergent in the market covers: i) ...
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Nomenclature of benzene derivatives | Science onlineNomenclature of benzene derivatives | Science online

General properties of Benzene, How the detergents remove spots and dirties Aromatic Benzene is used as an organic solvent for ...
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Benzene Derivatives in Organic Chemistry | Compound InterestBenzene Derivatives in Organic Chemistry | Compound Interest

In fact, when benzene is reacted to produce different derivatives, it ceases to be the compound benzene, and the chemical ... The naming of benzene derivatives can seem a little confusing to those new to organic chemistry. Unlike simpler organic ... There are a lot of benzene derivatives out there - if Ive omitted one that you think should be included in the graphic, please ... Some very important compounds that we come across on a daily basis are manufactured from derivatives of benzene. One of the ...
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Benzene derivatives--天津佶品佳化工Benzene derivatives--天津佶品佳化工

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WHO HQ Library catalog ›

    Results of search for su:{Benzene derivatives}WHO HQ Library catalog › Results of search for 'su:{Benzene derivatives}'

Book; Format: print Publisher: Geneva : World Health Organization, 1999Online access: Full text now in IRIS Availability: Items available for loan: WHO HQ [Call number: DC.HQ SERIAL] (2). Withdrawn (1). ...
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Revisiting Aromaticity and Chemical Bonding of Fluorinated Benzene Derivatives<...Revisiting Aromaticity and Chemical Bonding of Fluorinated Benzene Derivatives<...

Revisiting Aromaticity and Chemical Bonding of Fluorinated Benzene Derivatives. En: ChemistryOpen. 2015 ; Vol. 4, N.º 3. pp. ... Revisiting Aromaticity and Chemical Bonding of Fluorinated Benzene Derivatives. ChemistryOpen. 2015 jun 1;4(3):302-307. https ... Revisiting Aromaticity and Chemical Bonding of Fluorinated Benzene Derivatives. Juan J. Torres-Vega, Alejandro Vásquez-Espinal ... Revisiting Aromaticity and Chemical Bonding of Fluorinated Benzene Derivatives. / Torres-Vega, Juan J.; Vásquez-Espinal, ...
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Benzene and Its Derivatives Market Growth 2013 and Forecast 2019: ResearchMozBenzene and Its Derivatives Market Growth 2013 and Forecast 2019: ResearchMoz

Benzene is an aromatic hydrocarbon extracted from crude oil. Major derivatives of benzene include cumene, ethylbenzene, ... Consumption for benzene & its derivatives in rest of the world was low but it is expected to grow at a moderate pace followed ... Benzene & its derivatives are subjected to risk of volatility in supply and price of crude oil. Ethylbenzene has adverse effect ... Asia Pacific was the largest consumer of benzene & its derivatives and this trend is anticipated to remain same in the next few ...
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  • Decreased WBC counts followed by neutropenia correspond to the main hematologic effect of benzene secondary to hypoplasia and, less frequently, only thrombocytopenia or associated with neutropenia [5, (thefreedictionary.com)
  • Chemists at the Institute of Transformative Bio-Molecules (ITbM), Nagoya University and the JST-ERATO Project have developed a new method to accomplish the programmed synthesis of benzene derivatives with five or six different functional groups that enables access to novel functional organic materials that could not have been reached before. (phys.org)
  • Professor Kenichiro Itami, Junichiro Yamaguchi, Yasutomo Segawa and Shin Suzuki at the Institute of Transformative Bio-Molecules (ITbM), Nagoya University and the JST-ERATO Itami Molecular Nanocarbon Project have developed a new synthetic methodology to achieve the first programmed synthesis, isolation and characterization of a multi-substituted benzene derivative with five or six different functional groups. (phys.org)
  • Benzene is one of the most common structures in pharmaceuticals and multi-substituted benzene derivatives are found in many organic electronic devices. (phys.org)
  • The six hydrogens can be replaced by different substituents, making benzene an extremely versatile building block in many materials including in pharmaceuticals, agrochemicals, plastics and organic electronic devices. (phys.org)
  • Abdelghani El Malki, Abdellah Hannioui, El Mostapha Rakib, Nourredine Knouzi and Michel Vaultier, " Regioselective Platinum Catalyzed β-Hydrosilylation of Allylic Benzene Derivatives with Cyclic Siloxane D4 H", Letters in Organic Chemistry (2011) 8: 361. (eurekaselect.com)
  • Benzene is a hugely important compound in organic chemistry. (compoundchem.com)
  • The naming of benzene derivatives can seem a little confusing to those new to organic chemistry. (compoundchem.com)
  • Unlike simpler organic molecules, which are often named in a logical, systematic manner according to the IUPAC naming rules , the names of many of the derivatives of benzene initially may not seem to follow these rules. (compoundchem.com)
  • These results can be extrapolated to determine the aromaticity of any derivative within the series of fluorinated benzene derivatives (C 6 H (6-n) F n , where n=1-5). (unab.cl)
  • Although the yields of our synthesis still needs to be improved, we believe that this methodology will lead to maximizing the structural diversity of benzene derivatives in a programmable fashion, which will lead to understanding structure-property relationships and help discover new functional material," say Itami and Yamaguchi. (phys.org)
  • Count on a consistent global perspective of benzene supply and demand that affects your bottom line. (argusmedia.com)
  • Despite being highly useful, multi-substituted benzene derivatives are rather difficult to synthesize due to the lack of selective methods to install different substituents at the desired positions. (phys.org)
  • Our ultimate goal was to solve the synthetic problem of HABs, which has been extremely difficult due to the structural diversity of benzene and the limited number of synthetic methods. (phys.org)
  • In previous studies F. graminearum was found to cause cancer to humans and benzene derivatives were detected in breath of cancer sufferers. (springer.com)
  • Surprisingly, no study found benzene derivatives to be the cancerous agents in F. graminearum . (springer.com)
  • Conditions have been found for an efficient regioselective β-hydrosilylation of allylbenzene, 2-allyl-1- trimethylsiloxybenzene, 4-allyl-1,2-(methylenedioxy)benzene, allylpentafluorobenzene, and 4-allyl-2-methoxy-1- trimethylsiloxybenzene with D4H in the presence of Karstedts-catalyst or platinum black under mild conditions leading quantitatively to functionalized tetramethylcyclosiloxanes 3. (eurekaselect.com)
  • Decreased WBC counts followed by neutropenia correspond to the main hematologic effect of benzene secondary to hypoplasia and, less frequently, only thrombocytopenia or associated with neutropenia [5, (thefreedictionary.com)
  • Although there are a vast number of possible substituents that could be attached to benzene, many of the functional hexaarylbenzenes (HABs) possess a symmetrical structure. (phys.org)
  • In this study we detected benzene derivatives in F. graminearum and propose to study their role as cancer agents. (springer.com)
  • The primary sources experts from related industries and suppliers have been interviewed to obtain and verify critical information as well as to assess the future prospects of benzene and its derivatives. (marketsandmarkets.com)
  • This terminology derives from the fact that they are often have a pleasant and sweet fragrance (although benzene itself does not), but the more modern definition of the word relates to the the structure of molecules. (compoundchem.com)
  • Fluorescence Studies of Some Simple Benzene Derivatives in the Near Ultraviolet. (osa.org)
  • Arnold M. Bass and H. Sponer, "Fluorescence Studies of Some Simple Benzene Derivatives in the Near Ultraviolet. (osa.org)
  • Driven by the high necessity to access such materials, Itami's group has devised a unique sequential approach to synthesize penta- and hexa-substituted benzene derivatives. (phys.org)