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Acetic AnhydridesAnhydridesSuccinic AnhydridesPhthalic AnhydridesMaleic AnhydridesAcetylationNeutral GlycosphingolipidsAcetatesCitraconic AnhydridesChemistryChemical PhenomenaLysineChromatography, Thin LayerMagnetic Resonance SpectroscopyTritiumEncyclopedias as TopicChemistry, OrganicDictionaries, MedicalDictionaries as TopicElectronic MailFood Dispensers, AutomaticEditorial PoliciesAuthorshipPeriodicals as TopicPostal ServiceInternetTalcAspergillus nigerEscherichia coli InfectionsProteomeWaterCounterfeit DrugsFraudWater PollutionHerbicidesPesticidesGas, NaturalSpainMetabolomeAgrochemicalsElectrophoresis, Cellulose Acetate
Acetic Anhydrides: Compounds used extensively as acetylation, oxidation and dehydrating agents and in the modification of proteins and enzymes.Anhydrides: Chemical compounds derived from acids by the elimination of a molecule of water.Succinic Anhydrides: A subclass of anhydrides with the general structure of dihydrofurandione. They can be substituted on any carbon atom. They modify and inhibit proteins and enzymes and are used in the acylation of amino- and hydroxyl groups.Phthalic Anhydrides: Phthalic acid anhydrides. Can be substituted on any carbon atom. Used extensively in industry and as a reagent in the acylation of amino- and hydroxyl groups.Maleic Anhydrides: Used in copolymerization reactions, in the Diels-Alder(diene)synthesis, in the preparation of resins, pharmaceuticals and agricultural chemicals. It is a powerful irritant and causes burns.Acetylation: Formation of an acetyl derivative. (Stedman, 25th ed)Neutral Glycosphingolipids: A subclass of GLYCOSPHINGOLIPIDS containing one or more sugars within their head group connected directly to a ceramide moiety. They consist of monoglycosyl-, and oligoglycosylsphingoids and monoglycosyl- and oligoglycosylceramides.Acetates: Derivatives of ACETIC ACID. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain the carboxymethane structure.Citraconic Anhydrides: Methylmaleic anhydrides.Chemistry: A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.Chemical Phenomena: The composition, conformation, and properties of atoms and molecules, and their reaction and interaction processes.Lysine: An essential amino acid. It is often added to animal feed.Chromatography, Thin Layer: Chromatography on thin layers of adsorbents rather than in columns. The adsorbent can be alumina, silica gel, silicates, charcoals, or cellulose. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Magnetic Resonance Spectroscopy: Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).TritiumEncyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)Chemistry, Organic: The study of the structure, preparation, properties, and reactions of carbon compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Dictionaries, MedicalDictionaries as Topic: Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.Electronic Mail: Messages between computer users via COMPUTER COMMUNICATION NETWORKS. This feature duplicates most of the features of paper mail, such as forwarding, multiple copies, and attachments of images and other file types, but with a speed advantage. The term also refers to an individual message sent in this way.Food Dispensers, Automatic: Mechanical food dispensing machines.Editorial Policies: The guidelines and policy statements set forth by the editor(s) or editorial board of a publication.Authorship: The profession of writing. Also the identity of the writer as the creator of a literary production.Periodicals as Topic: A publication issued at stated, more or less regular, intervals.Postal Service: The functions and activities carried out by the U.S. Postal Service, foreign postal services, and private postal services such as Federal Express.Internet: A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.Talc: Finely powdered native hydrous magnesium silicate. It is used as a dusting powder, either alone or with starch or boric acid, for medicinal and toilet preparations. It is also an excipient and filler for pills, tablets, and for dusting tablet molds. (From Merck Index, 11th ed)Aspergillus niger: An imperfect fungus causing smut or black mold of several fruits, vegetables, etc.Escherichia coli Infections: Infections with bacteria of the species ESCHERICHIA COLI.Proteome: The protein complement of an organism coded for by its genome.Water: A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Counterfeit Drugs: Drugs manufactured and sold with the intent to misrepresent its origin, authenticity, chemical composition, and or efficacy. Counterfeit drugs may contain inappropriate quantities of ingredients not listed on the label or package. In order to further deceive the consumer, the packaging, container, or labeling, may be inaccurate, incorrect, or fake.Fraud: Exploitation through misrepresentation of the facts or concealment of the purposes of the exploiter.Water Pollution: Contamination of bodies of water (such as LAKES; RIVERS; SEAS; and GROUNDWATER.)Herbicides: Pesticides used to destroy unwanted vegetation, especially various types of weeds, grasses (POACEAE), and woody plants. Some plants develop HERBICIDE RESISTANCE.Pesticides: Chemicals used to destroy pests of any sort. The concept includes fungicides (FUNGICIDES, INDUSTRIAL); INSECTICIDES; RODENTICIDES; etc.Gas, Natural: A combustible, gaseous mixture of low-molecular weight PARAFFIN hydrocarbons, generated below the surface of the earth. It contains mostly METHANE and ETHANE with small amounts of PROPANE; BUTANES; and higher hydrocarbons, and sometimes NITROGEN; CARBON DIOXIDE; HYDROGEN SULFIDE; and HELIUM. (from McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Spain: Parliamentary democracy located between France on the northeast and Portugual on the west and bordered by the Atlantic Ocean and the Mediterranean Sea.Metabolome: The dynamic collection of metabolites which represent a cell's or organism's net metabolic response to current conditions.Agrochemicals: Chemicals used in agriculture. These include pesticides, fumigants, fertilizers, plant hormones, steroids, antibiotics, mycotoxins, etc.Electrophoresis, Cellulose Acetate: Electrophoresis in which cellulose acetate is the diffusion medium.

Characterisation of the conformational and quaternary structure-dependent heparin-binding region of bovine seminal plasma protein PDC-109. (1/78)

PDC-109, the major heparin-binding protein of bull seminal plasma, binds to sperm choline lipids at ejaculation and modulates capacitation mediated by heparin. Affinity chromatography on heparin-Sepharose showed that polydisperse, but not monomeric, PDC-109 displayed heparin-binding capability. We sought to characterise the surface topology of the quaternary structure-dependent heparin-binding region of PDC-109 by comparing the arginine- and lysine-selective chemical modification patterns of the free and the heparin-bound protein. A combination of reversed-phase peptide mapping of endoproteinase Lys-C-digested PDC-109 derivatives and mass spectrometry was employed to identify modified and heparin-protected residues. PDC-109 contains two tandemly arranged fibronectin type II domains (a, Cys24-Cys61; b, Cys69-Cys109). The results show that six basic residues (Lys34, Arg57, Lys59, Arg64, Lys68, and Arg104) were shielded from reaction with acetic anhydride and 1,2-cyclohexanedione in heparin-bound PDC-109 oligomers. In the 1H-NMR solution structures of single fibronectin type II domains, residues topologically equivalent to PDC-109 Arg57 (Arg104) and Lys59 lay around beta-strand D on the same face of the domain. In full-length PDC-109, Arg64 and Lys68 are both located in the intervening polypeptide between domains a and b. Our data suggest possible quaternary structure arrangements of PDC-109 molecules to form a heparin-binding oligomer.  (+info)

Chemical modification of lysine side chains of cyclodextrin glycosyltransferase from Thermoanaerobacter causes a shift from cyclodextrin glycosyltransferase to alpha-amylase specificity. (2/78)

Cyclodextrin glycosyltransferases and alpha-amylases are two groups of enzymes with related secondary structures. However, cyclodextrin glycosyltransferases display transferase activities not present in alpha-amylases, probably derived from the existence of two more domains and different amino acid sequences. The hydrolytic activity of cyclodextrin glycosyltransferases is generally quite low, except for two cyclodextrin glycosyltransferases from termophiles. In this work, we have carried out the chemical modification (with acetic anhydride) of the amino groups of cyclodextrin glycosyltransferase from Thermoanaerobacter to assess their contributions to protein function. The acetylated cyclodextrin glycosyltransferase showed a significant reduction of its cyclization, coupling and disproportionation activities. Surprisingly, the hydrolytic (saccharifying) activity was slightly enhanced. These results suggest the participation of one or more lysine side chains in the interactions contributing to the transferase activity, either in any of the S11 subsites or in the acceptor binding site.  (+info)

Induction and suppression of endothelial cell apoptosis by sphingolipids: a possible in vitro model for cell-cell interactions between platelets and endothelial cells. (3/78)

Because sphingosine (Sph) is actively incorporated into platelets and rapidly converted to sphingosine 1-phosphate (Sph-1-P), which is then released extracellularly, it is important to study the effects of Sph and Sph-1-P on endothelial cells from the viewpoint of platelet-endothelial cell interaction. In this study, we found that Sph, as well as ceramide, induces apoptosis in human umbilical vein endothelial cells (HUVECs). In contrast, Sph-1-P acts as a HUVEC survival factor; this bioactive lipid was shown to protect HUVECs from apoptosis induced by the withdrawal of growth factors and to stimulate HUVEC DNA synthesis. In metabolic studies, [3H]Sph, incorporated into HUVECs, was converted to [3H]Cer and further to [3H]sphingomyelin in a time-dependent manner, whereas [3H]Sph-1-P formation from [3H]Sph was weak and transient. These findings in HUVECs are very different from those of platelets, which possess a highly active Sph kinase but lack Sph-1-P lyase. As a result, platelets abundantly store Sph-1-P, whereas HUVECs contain much less Sph-1-P. Finally, HUVECs, in contrast to platelets, failed to release Sph-1-P extracellularly, indicating that HUVECs themselves are not able to supply the survival factor Sph-1-P, but receive it from activated platelets. Our results suggest that platelets may maintain the integrity of endothelial cells by incorporating Sph and releasing Sph-1-P.  (+info)

Distinguishing between luminal and localized proton buffering pools in thylakoid membranes. (4/78)

The dual gradient energy coupling hypothesis posits that chloroplast thylakoid membranes are energized for ATP formation by either a delocalized or a localized proton gradient geometry. Localized energy coupling is characterized by sequestered domains with a buffering capacity of approximately 150 nmol H(+) mg(-1) chlorophyll (Chl). A total of 30 to 40 nmol mg(-1) Chl of the total sequestered domain buffering capacity is contributed by lysines with anomolously low pK(a)s, which can be covalently derivatized with acetic anhydride. We report that in thylakoid membranes treated with acetic anhydride, luminal acidification by a photosystem I (duraquinol [DQH(2)] to methyl viologen [MV]) proton pumping partial reaction was nearly completely inhibited, as measured by three separate assays, yet surprisingly, H(+) accumulation still occurred to the significant level of more than 100 nmol H(+) mg Chl(-1), presumably into the sequestered domains. The treatment did not increase the observed rate constant of dark H(+) efflux, nor was electron transport significantly inhibited. These data provide support for the existence of a sequestered proton translocating pathway linking the redox reaction H(+) ion sources with the CF(0) H(+) channel. The sequestered, low-pK(a) Lys groups appear to have a role in the H(+) diffusion process and chemically modifying them blocks the putative H(+) relay system.  (+info)

Novel mechanism of surface catalysis of protein adduct formation. NMR studies of the acetylation of ubiquitin. (5/78)

Reactivity of surface lysyl residues of proteins with a broad range of chemical agents has been proposed to be dependent on the catalytic microenvironment of the residue. We have investigated the acetylation of wild type ubiquitin and of the UbH68N mutant to evaluate the potential contribution of His-68 to the reactivity of Lys-6, which is about 4 A distant. These studies were performed using [1-(13)C]acetyl salicylate or [1,1'-(13)C(2)]acetic anhydride, and the acetylated products were detected by two-dimensional heteronuclear multiple quantum coherence spectroscopy. The results demonstrate that His-68 makes a positive contribution to the rate of acetylation of Lys-6 by labeled aspirin. Additionally, a pair of transient resonances is observed after treatment of wild type ubiquitin with the labeled acetic anhydride but not upon treatment of the H68N mutant. These resonances are assigned to the acetylated His-68 residue. The loss of intensity of the acetylhistidine resonances is accompanied by an increase in intensity of the acetyl-Lys-6 peak, supporting the existence of a transacetylation process between the acetylhistidine 68 and lysine 6 residues located on the protein surface. Hence, this may be the first direct demonstration of a catalytic intermediate forming on the protein surface.  (+info)

Intramolecular capture of pummerer reaction intermediates by an aromatic nucleophile: selective construction of 1,4-benzothiazine and indole ring systems. (6/78)

The simple alkyl sulfoxide 6 carrying two aromatic nucleophiles, when treated with trifluoroacetic anhydride at room temperature (Pummerer reaction conditions), underwent an intramolecular aromatic sulfenylation of the 6-exo-tet process in an exclusive manner to yield two regioisomeric 1,4-benzothiazine derivatives, 8 and 9. On the other hand, a similar reaction of the alpha-acyl sulfoxide 7, possessing identical aromatic nucleophiles, caused an intramolecular aromatic alkylation of the 5-exo-trig process to produce the 3-oxo-indole derivative 14 in a quantitative yield. These results demonstrate that the construction of 1,4-benzothiazine and indole ring systems can be achieved in a selective manner by proper choice of the sulfoxide side chain.  (+info)

Trifluoromethyl ketone-based inhibitors of apoptosis in cerebellar granule neurons. (7/78)

A variety of aromatic trifluoromethyl ketone derivatives has been studied as inhibitors of apoptosis in cerebellar granule neurons (CGNs). Among them, alpha-trifluoromethyl diketone (2) and benzyl trifluoromethyl ketone (11) were found to be apoptosis inhibitors which can prevent a neurodegenerative disease. Compounds 2 and 11 showed neuroprotection effect on low K+-induced apoptosis in CGNs. Furthermore, these compounds effectively suppressed DNA fragmentation accompanied with apoptosis. The neuroprotection mode of 2 and 11 was not related to inhibition of caspase-3.  (+info)

Scandium(III) trifluoromethanesulfonate catalyzed aromatic nitration with inorganic nitrates and acetic anhydride. (8/78)

The rare earth metal(III) trifluoromethanesulfonate (rare earth metal(III) triflate, RE(OTf)3) was found to be an efficient catalyst for aromatic nitration with carboxylic anhydride-inorganic nitrate as the nitrating agent. In the presence of a catalytic amount of RE(OTf)3, the nitration of substituted benzenes proceeded to afford the corresponding nitrobenzenes. Especially, scandium(III) trifluoromethanesulfonate (scandium(III) triflate, Sc(OTf)3) is the most active catalyst among our tested Lewis acids. It was also found that acetic anhydride-Al(NO3).9H2O is the most active nitrating agent in this system.  (+info)

Human Metabolome Database: Showing metabocard for Acetic anhydride (HMDB0031646)Human Metabolome Database: Showing metabocard for Acetic anhydride (HMDB0031646)
Acetic anhydride is an esterification agent for use in prepn. of modified food starch and for acetylation of monoglycerides Acetic anhydride is a versatile reagent for acetylations, the introduction of acetyl groups to organic substrates. In these conversions, acetic anhydride is viewed as a source of CH3CO+. Alcohols and amines are readily acetylated. For example, the reaction of acetic anhydride with ethanol yields ethyl acetate: (CH3CO)2O + CH3CH2OH → CH3CO2CH2CH3 + CH3COOH. Acetic anhydride is an irritant and flammable. Because of its reactivity toward water, alcohol foam or carbon dioxide are preferred for fire suppression. The vapour of acetic anhydride is harmful. Acetic anhydride is the chemical compound with the formula (CH3CO)2O. Commonly abbreviated Ac2O, it is one of the simplest acid anhydrides and is a widely used reagent in organic synthesis. It is a colorless liquid that smells strongly of acetic acid, which is formed by its reaction with the moisture in the air. As indicated ...
Acetic anhydride - definition of acetic anhydride by The Free DictionaryAcetic anhydride - definition of acetic anhydride by The Free Dictionary
Define acetic anhydride. acetic anhydride synonyms, acetic anhydride pronunciation, acetic anhydride translation, English dictionary definition of acetic anhydride. n a colourless pungent liquid used in the manufacture of cellulose and vinyl acetates for synthetic fabrics. Formula: 2O n. a colorless, pungent liquid,...
World Acetic Anhydride Market: Opportunities and Forecasts, 2014 - 2020World Acetic Anhydride Market: Opportunities and Forecasts, 2014 - 2020
Acetic anhydride, is a colorless liquid, primarily used in the manufacturing of cellulose acetate. Cellulose acetate is used in production of several products, such as cigarette filters, textile fibers and plastic goods. In addition, acetic anhydride is used for production or manufacturing of resins & polymers, artificial sweeteners, TAED, explosives, agrochemicals, coating materials and others. Acetic anhydride is used to manufacture tetraacetylethylenediamine (TAED), which is utilized as a bleach activator in laundry and cleaning industry. Similarly, acetic anhydride, in addition to its several other applications, is used often in the form of derivatives or sources, amongst which cellulose acetate is the most widely used derivative.. Cigarette filters, occupy the largest share in volume, since their tar and nicotine removal rate goes up to 50%, higher than other compounds such as phenols. Thus, cellulose acetate contributes to more than half of the world acetic anhydride market. The demand for ...
Wholesale Acetic Anhydride - Acetic Anhydride Manufacturers, Suppliers - EC21Wholesale Acetic Anhydride - Acetic Anhydride Manufacturers, Suppliers - EC21
Wholesale Acetic Anhydride ☆ Find 73 acetic anhydride products from 46 manufacturers & suppliers at EC21. ☆ Choose quality acetic anhydride manufacturers, suppliers & exporters now - EC21
Acetic anhydride - WikipediaAcetic anhydride - Wikipedia
As indicated by its organic chemistry, Acetic anhydride is mainly used for acetylations leading to commercially significant materials. Its largest application is for the conversion of cellulose to cellulose acetate, which is a component of photographic film and other coated materials, and is used in the manufacture of cigarette filters. Similarly it is used in the production of aspirin (acetylsalicylic acid), which is prepared by the acetylation of salicylic acid.[19] It is also used as a wood preservative via autoclave impregnation to make a longer-lasting timber. In starch industry, acetic anhydride is a common acetylation compound, used for the production of modified starches (E1414, E1420, E1422) Because of its use for the synthesis of heroin by the diacetylation of morphine, acetic anhydride is listed as a U.S. DEA List II precursor, and restricted in many other countries.[20]. ...
Sciencemadness Discussion Board - Acetic anhydride preparation - Powered by XMB 1.9.11Sciencemadness Discussion Board - Acetic anhydride preparation - Powered by XMB 1.9.11
Im not sure, but I think that its possible that I prepared acetic anhydride by accident today. I mixed 164g CH3COONa (contaminated with a small amount of NaHCO3, around 1-2g) with 75g 94% H2SO4. I then poured that into a flask; began heating it, and condensing the vapors (typical distillation). I noticed a very strange, sickly-sweet odor; very difficult to describe. I got a whiff of a very small amount of it, causing me to choke for a few moments. The condensed liquid (which I got 22mL of, if I remember correctly) was still liquid, showing no signs of imminent freezing, at -10C. Now, if that had been acetic acid, it would have frozen at a far higher temperature than that... acetic anhydride, on the other hand, would not freeze until the temperature was FAR lower. Im postulating that the following reactions were occuring, forming at least a fair-sized quantity of acetic anhydride (there is probably a significant amount of acetic acid remaining). Keep in mind that there was a slight ...
Celanese mulls closure of VAM, acetic anhydride units in Spain, FranceCelanese mulls closure of VAM, acetic anhydride units in Spain, France
To date, no credible buyers have been identified and no offers for acquiring these facilities were made. Therefore, Celanese said Monday that it will begin discussions concerning the possible closure of both the acetic anhydride facility in Roussillon and the VAM production unit in Tarragona. This action is initiated to safeguard the competitiveness of the Celanese acetyl business. The need for these contemplated projects emerged from an assessment of Celanese s overall corporate strategy, which included an assessment of the company s global manufacturing facilities. Specifically, in support of the company s acetyl portfolio, the manufacturing footprint strategy favors integrated production sites that provide critical economies of scale. Celanese subsidiaries that operate these facilities expect to soon begin the consultation process with local employee representatives to mitigate the social impact of the closures to the best possible extent.. ...
What is the reaction between acetic anhydride and water? | Reference.comWhat is the reaction between acetic anhydride and water? | Reference.com
The reaction between acetic anhydride and water is written as follows: (CH3CO)2O + H2O --| 2CH3COOH. This reaction produces two molecules of etanoic acid, a compound that appears as a colorless...
China Acetic acid, China Acetic anhydride, China Acetone, Products Catalog1China Acetic acid, China Acetic anhydride, China Acetone, Products Catalog1
We,China Suppliers & China Manufacturers, provide our Products catalog2: China Acetic acid, China Acetic anhydride, China Acetone
Tratamentul artritei radiculate de către un ou dizolvat în acid aceticTratamentul artritei radiculate de către un ou dizolvat în acid acetic
Iritarea stomacului sau diaree. Molecular Formula: C9H18Cl3O4P, Molecular Weight: 327. Technical Service: Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others. Disagree with Amir that a weak acid or a weak base should always be used to obtain stable pH, as in the. CHEMWILL Asia is a leading manufacturer of CAS, Tetradecanoic acid, 2, 2- dimethylpropyl este. Buy TCPP ( CAS, a mixture of isomers, from Santa Cruz Biotechnology. The Acid Hydrolysis Mechanism of Acetals Catalyzed by a Supramolecular Assembly in Basic Solution The Journal of Organic Chemistry Pluth, Bergman and Raymond. We have a problem about acetylation of steroids with acetic anhydride and prydine ( 50/ 50). How can I get acetylation with acetic anhydride and prydine? Some materials in this group can detonate. The reaction was stirred until TLC. How can I remove aqueous acetic acid. A fost izolat în forma sa ...
From Cotton to Cellulose AcetateFrom Cotton to Cellulose Acetate
Theres not much that we can do with raw cotton in terms of processing it, other than to make thread or yarn. But, that tangled up mess of polymer chains can also be made into films. Just imagine taking a big handful of that cooked spaghetti and smooshing it around on a plate to give a flat, smooth layer or film. You cant do that with the raw stuff. So, how do we take away the hydrogen bonding? We have to block the OH group with something that wont hydrogen bond. A relatively cheap and easy way to do this is to replace them with acetate groups (or react them using chemistry). We use acetic acid to do this. Acetic acid is what gives vinegar its sour taste, but soaking the cotton balls in vinegar wont work (dont even bother -- youll just make cotton balls that smell like pickles!). Well have to go into the lab and use 100% acetic acid (also called "glacial acetic acid) and acetic anhydride. (Acetic anhydride is just two acetic acid molecules put together with the loss of a water molecule. ...
Acetic anhydride - toxicity, ecological toxicity and regulatory informationAcetic anhydride - toxicity, ecological toxicity and regulatory information
Data on 6,500 pesticides, insecticides and herbicides including toxicity, water pollution, ecological toxicity, uses and regulatory status.
Hepatic DC concentrations (PCBs, PCDDs, PCDFs, HCB, p,p-DDE and | Renin InhibitorHepatic DC concentrations (PCBs, PCDDs, PCDFs, HCB, p,p'-DDE and | Renin Inhibitor
Introduction: The aim of this study was to compare fucose and sialic acid residue expression on fibronectin and alpha(1)-acid glycoprotein in the. seminal plasma PF-6463922 solubility dmso of men suspected of infertility and suffering from leukocytospermia.. Subjects and methods: Seminal ejaculates were collected from 27 leukocytospermic and 18 healthy, normozoospermic men. The relative degree of fucosylation and sialylation of fibronectin and alpha(1)-acid glycoprotein was estimated by ELISA using fucose and sialic acid specific lectins from Aleuria aurantia, Lotus tetragonolobus, and Ulex europaeus as well as Maackia amurensis and Sambucus nigra, respectively.. Results: Leukocytospermic seminal fibronectin, in comparison with fibronectin of normal fertile group, showed lower relative reactivity with AAL, LTA and UEA, and higher reactivity with MAA and SNA, while the AGP of the leukocytospermic group was less reactive with AAL, and the relative reactivity. buy 5-Fluoracil with LTA and MAA was ...
acetic anhydrides Protocols and Video...'acetic anhydrides' Protocols and Video...
Video articles in JoVE about acetic anhydrides include Consensus Brain-derived Protein, Extraction Protocol for the Study of Human and Murine Brain Proteome Using Both 2D-DIGE and Mini 2DE Immunoblotting, Customization of Aspergillus niger Morphology Through Addition of Talc Micro Particles, Chick Heart Invasion Assay for Testing the Invasiveness of Cancer Cells and the Activity of Potentially Anti-invasive Compounds, The Use of the Ex Vivo Chandler Loop Apparatus to Assess the Biocompatibility of Modified Polymeric Blood Conduits, Foraging Path-length Protocol for Drosophila melanogaster Larvae, Recombinant Protein Expression, Crystallization, and Biophysical Studies of a Bacillus-conserved Nucleotide Pyrophosphorylase, BcMazG, Analysis of LINE-1 Retrotransposition at the Single Nucleus Level, Evaluating In Vitro DNA Damage Using Comet Assay, Non-Invasive Model of Neuropathogenic Escherichia coli Infection in the Neonatal Rat, Measurement of Basal and Forskolin-stimulated Lipolysis
Α-Methylacetylfentanyl - WikipediaΑ-Methylacetylfentanyl - Wikipedia
α-Methylacetylfentanyl (or alphamethylacetylfentanyl) is an opioid analgesic that is an analog of fentanyl. It is a Schedule I controlled substance in the United States, with a DEA ACSCN of 9815. α-Methylacetylfentanyl was sold briefly on the black market in the early 1980s, before the introduction of the Federal Analog Act which for the first time attempted to control entire families of drugs based on their structural similarity rather than scheduling each drug individually as they appeared. α-Methylacetylfentanyl is made with the same synthetic route as α-methylfentanyl, but by substituting the relatively common acetic anhydride for the more difficult to obtain chemical propionic anhydride in the synthesis. α-Methylacetylfentanyl has similar effects to fentanyl.[medical citation needed] Side effects of fentanyl analogs are similar to those of fentanyl itself, which include itching, nausea and potentially serious respiratory depression, which can be life-threatening. Fentanyl analogs have ...
Acetic Acid Market by Derivatives & Applications - 2018 | MarketsandMarketsAcetic Acid Market by Derivatives & Applications - 2018 | MarketsandMarkets
[183 Slides Report] Acetic Acid Market report categorizes the global Market by Applications & Its Derivatives (Vinyl Acetate Monomer, Purified Terephthalic Acid, Acetic Anhydride & Ester Solvents - Butyl Acetate & Ethyl Acetate) & by Geography
Indian Patents. 249666:IMIDAZOPYRAZINE TYROSINE KINASE INHIBITORSIndian Patents. 249666:IMIDAZOPYRAZINE TYROSINE KINASE INHIBITORS
and I-C" (compounds of Formula I where R1 = Z-CEb-N(R2)(R3)), the hydroxy group of compound of Formula I-B (compounds of Formula I where R = Z-CH2OH) was converted to A2, a phihalimide group, following the procedures as described in Scheme 5 fin: the conversion of compound of Formula VII to compound of Formula VL Reaction of compound of Formula I-C* under conditions described in Scheme 4 afforded compound of Formula I-C". Reaction of compound of Formula I- C" with but not limited to various alkylating agents, various aldehydes/ketones under reductive animation conditions, various acylating agents such as acetic anhydride, benzoyi chlorides, or with caiboxyiic acids in the presence of EDC or DCC with HOBT or HOAT, or with sulphonylating agents such as Ts2O or MeSC^Cl afforded compounds of Formula I-C * \ For example, in a typical preparation of compounds of Formula I-C" (compounds of Formula I where R1 = Z^-CHT-NO^XR3)), a compound of Formula I-C" is treated with a suitable acylating agent in ...
Acetic Acid Consumption Market worth 16,339.67 Kilotons by 2018Acetic Acid Consumption Market worth 16,339.67 Kilotons by 2018
Early buyers will receive 10% customization of report.. Asia-Pacific - the biggest market of acetic acid. The Asia-Pacific region is the most promising chemical market and is expected to be the same in the near future. Asia-Pacific is the worlds largest market of acetic acid, which consumed more than half of the total global demand in 2012, and also for most of its applications that include vinyl acetate monomer, purified terephthalic acid,acetic anhydride, and ester solvents - ethyl acetate & butyl acetate. The demand for acetic acid in the region is anticipated to grow at a CAGR of about 5.01% from 2013 to 2018. It is estimated that China and Taiwan are the biggest consumers of acetic acid in the region, followed by Japan in 2012. India is expected to be the fastest growing market of acetic acid. The continuous rise in the production of end products for use within the region and for exports derives a huge demand for chemicals. A few of the reasons for the high growth in this region are growing ...
Aspirin SynthesisAspirin Synthesis
Solved: Aspirin is the common name for acetylsalicylic acid, often used to alleviate fever and inflammation. Despite its name, acetylsalicylic acid is an ester and is typically prepared by reaction of salicylic acid with excess acetic anhydride.
How many moles of aspirin C9H8O4, are in a bottle comtaining 450g by weight?How many moles of aspirin C9H8O4, are in a bottle comtaining 450g by weight?
Asprin, C9H8O4, is prepared by reacting salicylic acid, C7H6O3, with acetic anhydride, C4H6O3, in the reaction C7H6O3(s) + C4H6O3(l) -, C9H8O4(s) + C2H4O2(l) A student is told to prepare 45.0 g of aspirin. She is also told to use ...
23 | July | 2014 | Chem-Station Int. Ed.23 | July | 2014 | Chem-Station Int. Ed.
General Characteristics The Swern-type oxidation of alcohols using acetic anhydride as the activator of DMSO. The reaction times are relatively long (12-24 h). This reaction is useful for the .... ...
Browsing DQCM - Artículos by TitleBrowsing DQCM - Artículos by Title
We report quantitative measurements of the relative reactivities of a series of C-H bonds of gaseous or liquid CnH2n+2 alkanes (n = 1-8, 29 different C-H bonds) towards insitu generated electrophiles (copper, silver, and ...
Transition Metal-free gem-difluorocyclopropanation of Alkenes with CF<sub>3</sub>SiMe<sub>3</sub>−NaI System: a Recipe for...Transition Metal-free gem-difluorocyclopropanation of Alkenes with CF<sub>3</sub>SiMe<sub>3</sub>−NaI System: a Recipe for...
Reaction of various electron‐deficient alkenes, as well as functionalized styrene derivatives with CF3SiMe3−NaI system is studied. Relative reactivity of the substrates is established. It is shown that many α,β‐unsaturated esters can be difluorocyclopropanated efficiently under "slow addition protocol" conditions, which provides access to mono‐ and spirocyclic gem‐difluorocyclopropyl‐substituted carboxylic acids with good yields (36-79% for two steps) on up to 100 g scale.. ...
Optimization of wood flour acetylation by factorial design and partial least squares regressionOptimization of wood flour acetylation by factorial design and partial least squares regression
In this reaction, the hydrogen atom that belongs to cellulose hydroxyl is replaced by an acetic group from acetic anhydride, yielding a carboxylic acid and an ester group in the wood, which is less polar to strong hydroxyl. This strategy renders wood more compatible with apolar polymers such as polyolefins.. Hence, the objectives of this study were to verify the effects of the proportion of acetic acid/anhydride on the acetylation of wood flour at varying times and temperatures and to examine hydroxyl and carbonyl groups by FTIR. The influence of these parameters was verified by experiments with a factorial design and partial least squares regression, both useful techniques for obtaining information concerning the effect of parameters in a given process.25-28 EXPERIMENTAL. Materials. Wood flour (100 mesh) from Pinus sp. trees, with a density of 0.25 g/cm³, was supplied by Pinhopó Ltda. Acetic acid and acetic anhydride (both from Biotec) were used in different ratios in the acetylation ...
L-Pyrrolidine-2-Carboxylic Acid-4-Hydrogen Sulfate (Supported on Silica Gel) as a New and Efficient Catalyst for Acylation of...L-Pyrrolidine-2-Carboxylic Acid-4-Hydrogen Sulfate (Supported on Silica Gel) as a New and Efficient Catalyst for Acylation of...
Title:L-Pyrrolidine-2-Carboxylic Acid-4-Hydrogen Sulfate (Supported on Silica Gel) as a New and Efficient Catalyst for Acylation of Alcohols, Phenols and Amines Under Solvent-Free Conditions. VOLUME: 10 ISSUE: 5. Author(s):Maryam Hajjami, Arash Ghorbani-Choghamarani and Zahra Khani. Affiliation:Department of Chemistry, Faculty of Science, Ilam University, P.O. Box 69315516, Ilam, Iran.. Keywords:Acylation, L-pyrrolidine-2-carboxylic acid-4-hydrogen sulfate, Acetic anhydride, Alcohol, Phenol, Amine.. Abstract:In the present work, L-pyrrolidine-2-carboxylic acid-4-hydrogen sulfate, supported on silica gel was prepared and characterized by Mass spectroscopy, 1H NMR, 13CNMR, FT IR and elemental analysis (CHN) methods. This heterogenized catalyst can be used as an efficient catalyst for the acylation of alcohols, phenols, and amines with acetic anhydride under mild and solvent-free conditions. Simple work-up, stability of the catalyst, nontoxicity and good to high yields are the advantages of this ...
Erlenmeyer-Plöchl azlactone and amino-acid synthesis - WikipediaErlenmeyer-Plöchl azlactone and amino-acid synthesis - Wikipedia
The Erlenmeyer-Plöchl azlactone and amino acid synthesis, named after Friedrich Gustav Carl Emil Erlenmeyer who partly discovered the reaction, is a series of chemical reactions which transform an N-acyl glycine to various other amino acids via an oxazolone and an azlactone. Hippuric acid, the benzamide derivative of glycine, cyclizes in the presence of acetic anhydride, condensing to give 2-phenyl-oxazolone. This intermediate also has two acidic protons and reacts with benzaldehyde, acetic anhydride and sodium acetate to a so-called azlactone. This compound on reduction gives access to phenylalanine. Variants of the azlactone synthesis in which analogues of azlactones are used are sometimes advantageous. Hydantoin (in Bergmann modification), thiohydantoin and rhodanine have each been employed as the enolate-forming component of the condensation. In one study the Erlenmeyer amino acid synthesis was used in the heart of an L-m-tyrosine synthesis Dakin-West reaction Perkin reaction Plöchl, J. ...
Partial characterization of the oligosaccharides of mouse thymocyte Thy-1 glycoprotein | Biochemical JournalPartial characterization of the oligosaccharides of mouse thymocyte Thy-1 glycoprotein | Biochemical Journal
Four glycopeptides (I, IIA, IIB, III) with different oligosaccharide structures were isolated from purified mouse thymocyte Thy-1 glycoprotein. The glycoprotein was digested with Pronase, and the glycopeptide fraction was isolated by gel filtration and acetylated with [3H]acetic anhydride. The different glycan structures were separated by affinity chromatography on concanavalin A-Sepharose 4B and lentil lectin-Sepharose 4B. Size determinations of intact and exoglycosidase- and endoglycosidase-digested glycopeptides were performed by gel filtration on Bio-Gel P-6, calibrated with glycopeptides of known structure. On the basis of these experiments and on the behaviour of the glycopeptides on the lectin columns, the following structures of the oligosaccharide chains were proposed: I, triantennary complex-type with terminal fucose; IIA, biantennary complex-type without fucose; IIB, biantennary complex-type with fucose; III, a mixture of high-mannose chains containing either five or six ...
Changes to biological activity following acetylation of dendrotoxin I from Dendroaspis polylepis (black mamba)<...Changes to biological activity following acetylation of dendrotoxin I from Dendroaspis polylepis (black mamba)<...
TY - JOUR. T1 - Changes to biological activity following acetylation of dendrotoxin I from Dendroaspis polylepis (black mamba). AU - Harvey, A.L.. AU - Rowan, E.G.. AU - Vatanpour, H.. AU - Engstrom, A.. AU - Westerlund, B.. AU - Karlsson, E.. PY - 1997/8. Y1 - 1997/8. N2 - The potassium channel blocker dendrotoxin I was acetylated with acetic anhydride. Mono-acetyl derivatives of all seven lysine residues (N-terminus blocked) and a di-derivative were isolated by chromatography on the cation-exchanger Bio-Rex 70 and reversed-phase high-performance liquid chromatography. The derivative acetyl-Lys 29 and the di-derivative of Tyr 24 and Lys 28 had more than 1000 times lower affinity than the native toxin as determined by inhibition of the 125I-dendrotoxin binding to synaptosomal membranes from rat brain. Lys 29 is part of the triplet Lys-Lys-Lys (28-30) which also occurs in the homologous alpha-dendrotoxin where the triplet is not in the functional site, as shown by site-directed mutagenesis. ...
Synthesis of Acylals from Aromatic Aldehydes and Their Deprotections Catalyzed by Synthetic Phosphates: Practical and...Synthesis of Acylals from Aromatic Aldehydes and Their Deprotections Catalyzed by Synthetic Phosphates: Practical and...
Effective and clean preparation of aromatic aldehyde acylals in the presence of synthetic phosphates (flourapatite and hydroxyapatite doped with ZnCl2 and ZnBr2) and acetic anhydride was easily achieved under solvent-free conditions at room temperature at high yields (86% - 97%). The deprotection of the resulting acylum was also accomplished by using the same microwave irradiation catalysts. Excellent yields (82 percent - 96 percent) and a quick reaction time are consistently advantaged by this strategy (3 - 4 min).. Author (s) Details. Fathallaah ...
Facile approach to enantiomerically pure α-amino ketones by Friedel-Crafts aminoacylation and their conversion into peptidyl...Facile approach to enantiomerically pure α-amino ketones by Friedel-Crafts aminoacylation and their conversion into peptidyl...
In this article we describe a versatile and straightforward preparative approach to chiral aryl α-amino ketones via a Friedel-Crafts-type reaction of stable and enantiomerically pure N-Fmoc protected L-amino acid chlorides with toluene in the presence of aluminum trichloride. The developed methodology provided aryl α-amino-p-methylphenyl ketones, which can be obtained and isolated as free bases or recovered as their N-acetyl derivatives, after treatment with acetic anhydride in chloroform at room temperature, subsequent to the Lewis acid induced removal of the 9-fluorenylmethoxycarbonyl protecting group. The Friedel-Crafts-like process and the cleavage of the amino function masking group can selectively be performed since, as verified in all cases, the α-aminoacylation step occurred with kinetics that were faster than those required to remove the N-protection. The presented approach was also explored as a facile and useful synthetic tool for the preparation of optically pure ketone di- and ...
MDE; MDEA; EVE - Psychotropicon - Das Online-Magazin für PsychonautenMDE; MDEA; EVE - Psychotropicon - Das Online-Magazin für Psychonauten
N-ETHYL-MDA;. 3,4-METHYLENEDIOXY-N-ETHYLAMPHETAMINE. SYNTHESIS: (from MDA) To a solution of 3.6 g of the free base of 3,4-methylenedioxyamphetamine (MDA) in 20 g pyridine, there was added 2.3 g acetic anhydride, and the mixture stirred at room temperature for 0.5 h. This was then poured into 250 mL H2O and acidified with HCl. This aqueous phase was extracted with 3×75 mL CH2Cl2, the extracts pooled and washed with dilute HCl, and the solvent removed under vacuum. The pale amber residue of N-acetyl-3,4-methylenedioxyamphetamine weighed 5.2 g as the crude product, and it was reduced without purification. On standing it slowly formed crystals. Recrystallization from a mixture of EtOAc/hexane (1:1) gave white crystals with a mp of 92-93 °C.. A stirred suspension of 4.8 g LAH in 400 mL anhydrous THF was brought up to a reflux, and then treated with a solution of 5.0 g of the impure N-acetyl-3,4-methylenedioxyamphetamine in 20 mL anhydrous THF. Reflux conditions were maintained for 3 days, and then ...
Asian chemical industry surge benefits acetic acid market | Processing MagazineAsian chemical industry surge benefits acetic acid market | Processing Magazine
Industrial growth in China and technological progress is driving the global chemicals industry, states a new report by industry research firm GBI Research.. The new report studies acetic acid, an important chemical with applications in several downstream industries like textiles, food processing and several other industrial chemical processes. Acetic acid prices are mainly driven by the prices of feedstock and methanol and demand for its derivatives, including Vinyl Acetate Monomer (VAM), which is used in paints, adhesives and coatings, and Purified Terephthalic Acid (PTA), which is mainly used in the manufacture of polyester and fibers, as well as acetic anhydride and ethyl acetate. An increasing trend in acetate esters being used mainly as solvents for inks, paints and coatings has also been observed in the last few years.. On the technological front, emerging technologies are offering promising opportunities for growth within the chemicals industry. Manufacturers of acetic acid are ...
Molecules | Free Full-Text | Synthesis and Antimicrobial Activity of Some New Pyrimidinone and Oxazinone Derivatives Fused with...Molecules | Free Full-Text | Synthesis and Antimicrobial Activity of Some New Pyrimidinone and Oxazinone Derivatives Fused with...
A series of pyridines, pyrimidinones, oxazinones and their derivatives were synthesized as antimicrobial agents using citrazinic acid (2,6-dihydroxyisonicotinic acid) as a starting material. α,β-Unsaturated ketones 3a-c were condensed with cyanothio-acetamide in the presence of ammonium acetate to give 2-cyanopyridinethiones 4a-c, which were reacted with ethyl chloroacetate to yield the corresponding cyano esters 5a-c. The esters 5a-c were cyclized by action of sodium methoxide to aminoesters 6a-c, which were aminolyzed with ammonia to corresponding aminoamide derivatives 7a-c. Also, the esters 6a-c were hydrolyzed with NaOH to the corresponding sodium salt 8a-c, which were treated with acetic anhydride to afford 2-methyloxazinones 9a-c. The latter compounds were treated with ammonium acetate to afford 2-methylpyrimidinones 10a-c, followed by methylation with methyl iodide to yield 2,3-dimethyl-pyrimidinones 11a-c. The antimicrobial screening showed that many of these compounds have good antibacterial
Quantitation of neuropeptides in Cpe<sup>fat</sup>/Cpe<sup>fat</sup> mice using differential isotopic tags and...Quantitation of neuropeptides in Cpe<sup>fat</sup>/Cpe<sup>fat</sup> mice using differential isotopic tags and...
TY - JOUR. T1 - Quantitation of neuropeptides in Cpefat/Cpefat mice using differential isotopic tags and mass spectrometry. AU - Che, Fa yun. AU - Fricker, Lloyd D.. PY - 2002/7/1. Y1 - 2002/7/1. N2 - Neuroendocrine peptides play important roles as intercellular messengers. We previously developed a technique to isolate and identify a large number of neuroendocrine peptides from Cpefat/Cpefat mice (Che, F.; et al. Proc. Natl. Acad. Sci. U.S.A. 2001, 98, 9971-6); these mice lack carboxypeptidase E activity and this defect causes an accumulation of neuropeptide intermediates that contain C-terminal Lys or Arg residues (Naggert, J. K.; et al. Nat. Genet. 1995, 10, 135-42). In the present study, we have developed a differential isotopic-labeling technique that can be used to quantitate changes in neuropeptide levels in Cpefat/Cpefat mouse tissues. Samples are treated with either the H6 or the D6 form of acetic anhydride, peptides that contain C-terminal basic amino acids are isolated by affinity ...
Wiley: Kirk-Othmer Encyclopedia of Chemical Technology, Index to Volumes 1 - 26, 5th Edition - Kirk-OthmerWiley: Kirk-Othmer Encyclopedia of Chemical Technology, Index to Volumes 1 - 26, 5th Edition - Kirk-Othmer
VOLUME 1. Abrasives.. Absorption.. Acetaldehyde.. Acetic Acid.. Acetic Acid, Halogenated Derivatives.. Acetic Anhydride.. Acetone.. Acetylene.. Acetylene-Derived Chemicals.. Acrolein and Derivatives.. Acrylamide.. Acrylamide Polymers.. Acrylic Acid and its Derivatives.. Acrylic Ester Polymers.. Acrylonitrile.. Acrylonitrile-Butadiene-Styrene (ABS) Polymers.. Acrylonitrile Polymers, Survey and Styrene-Acrylonitrile (SAN).. Actinides and Transactinides.. Adhesion.. Adhesives.. Adipic Acid.. Adsorption.. Adsorption, Gas Separation.. Adsorption, Liquid Separation.. Advanced Materials, Economic Evaluation.. Aeration, Biotechnology.. Aerogels.. Aerosols.. Air Pollution.. Air Pollution and Control, Indoor.. VOLUME 2.. Alcohols, Higher Aliphatic, Survey.. Alcohols, Higher Aliphatic, Synthetic Processes.. Alcohols, Polyhydric.. Aldehydes.. Alkaloids.. Alkanolamines from Nitro Alcohols.. Alkanolamines from Olefin Oxides and Ammonia.. Alkyd Resins.. Alkylation.. Alkylphenols.. Allyl Alcohol and Monoallyl ...
Organic Chemistry - VernierOrganic Chemistry - Vernier
Friedel-Crafts reactions are examples of electrophilic aromatic substitution reactions. The reaction involves the substitution of hydrogen on the aromatic ring system by an electrophilic carbon species forming a new carbon-carbon bond. Friedel-Crafts reactions may be used to introduce either an alkyl or acyl group. Ferrocene does not undergo addition reactions typical of cyclopentadiene, but undergoes electrophilic aromatic substitution. The Friedel-Crafts acylation reaction of ferrocene involves the addition of the acylium cation to one of the carbon atoms on the ring, followed by loss of a proton (to solvent). The acylium cation is produced from acetic anhydride, which also serves as a solvent for this reaction. If only one ring reacts, then the product is the orange acetylferrocene. If both rings react, then the product is the red 1,1-diacetylferrocene. The reaction time of this experiment is reduced to limit the formation of 1,1-diacetylferrocene. Your objectives in this experiment will be ...
JCI - Calcium/calmodulin-dependent protein kinase II links ER stress with Fas and mitochondrial apoptosis pathwaysJCI - Calcium/calmodulin-dependent protein kinase II links ER stress with Fas and mitochondrial apoptosis pathways
Reagents. Cell culture media and reagents were from Invitrogen. HPLC-grade organic solvents were from Fisher Scientific. LDL (d, 1.020-1.063) was isolated from fresh human plasma by preparative ultracentrifugation as described previously (73). Our studies with purchased human plasma and purchased human aortic endothelial cells were exempt from IRB approval because the sources were anonymous. Acetyl-LDL was prepared by reaction of LDL with acetic anhydride (74). U18666A, KN93, KN92, AIP-II, SP6000125, and RU360 were from Calbiochem. All other chemical reagents, including the ACAT inhibitor 58035 (3-[decyldimethylsilyl]-N-[2-(4-methylphenyl)-1-phenylethyl] propanamide), were from Sigma-Aldrich unless otherwise specified. Mice. C57BL/6J and Fas-deficient (Lpr) mice used for peritoneal macrophage isolation were purchased from The Jackson Laboratory. Jnk2-/- mice were provided by R. Flavell (Yale University School of Medicine, New Haven, Connecticut, USA; ref. 75), and Stat1-/- mice were provided by ...
Simple Accordion with CSS & jQuery by Soh TanakaSimple Accordion with CSS & jQuery by Soh Tanaka
A 1-l. three-necked round-bottomed flask, fitted with a dropping funnel and a mechanical stirrer, is cooled in an ice-salt mixture. To the flask are added 55.5 g. (50 ml., 0.42 mole) of freshly distilled cinnamaldehyde (Note 1) and 225 ml. of acetic anhydride. When the temperature of the solution has reached 0-5° a solution of 18 ml. of concentrated nitric acid (sp. gr. 1.42) in 50 ml. of glacial acetic acid is added slowly through the dropping funnel while the mixture is stirred. The time of addition is 3-4 hours, during which the temperature is kept below 5°. After the addition is complete, the mixture is allowed to warm slowly to room temperature. The reaction flask is then dismantled and stoppered, and the reaction mixture is allowed to stand 2 days ...
CCCC 1983, Volume 48, Issue 5, Abstracts pp. 1447-1464 | Collection of Czechoslovak Chemical CommunicationsCCCC 1983, Volume 48, Issue 5, Abstracts pp. 1447-1464 | Collection of Czechoslovak Chemical Communications
The ketone XIII, obtained by Friedel-Crafts reaction of toluene with homoveratroyl chloride, was converted by the Leuckart reaction to the formamido derivative IXb which was used as the starting product for the synthesis of amines IIIb-Vb. Reduction of the ketone XIII gave the alcohol XVI which was treated with hydrogen chloride and afforded the chloro compound XVII. Its substitution reactions with 1-methylpiperazine, 1-(2-hydroxyethyl)piperazine and 1-phenylpiperazine resulted in the piperazines VIb-VIIIb. Acylations of the amine IIIb with acetic anhydride and homoveratroyl chloride gave the amides Xb and XIb which, together with the formamide IXb, were subjected to the Bischler-Napieralski reaction. 3,4-Dihydroisoquinolines XXII-XXIV were obtained and reduced to the 1,2,3,4-tetrahydroisoquinolines XXVb-XXVIIb. Treatment of XXVIIb with formaldehyde afforded the berbine derivative XXVIII. Demethylation of the amine IIIb with hydrobromic acid resulted in the title compound IIIa. Similar ...
CCCC 1984, Volume 49, Issue 8, Abstracts pp. 1816-1826 | Collection of Czechoslovak Chemical CommunicationsCCCC 1984, Volume 49, Issue 8, Abstracts pp. 1816-1826 | Collection of Czechoslovak Chemical Communications
Substitution reactions of (E)-11-(3-bromopropylidene)-6,11-dihydrodibenzo[b,e]thiepin (VIIIa) and its 2-chloro derivative VIIIb with 1-(2-hydroxyethyl)piperazine gave the title compounds IIIa and IIIb which afforded by treatment with acetic anhydride, decanoyl chloride and 3,4,5-trimethoxybenzoyl chloride the esters IVab-VIab. Reduction of the olefinic compounds IIIa and IIIb with hydrolytic acid resulted in the saturated amines IXa and IXb. The piperazine derivativeX was obtained by a substitution reaction of 2,11-dichloro-6,11-dihydrobenzo[b,e]thiepin with 1-(2-hydroxyethyl)piperazine. The amino alcohols IIIa and IIIb, as well as their acetates and 3,4,5-trimethoxybenzoates, are almost devoid of the CNS effects. The decanates Va and Vb have not the properties of the depot antipsychotics (neither antidepressants, nor neuroleptics). The saturated amino alcohol IXa showed some antihistamine, spasmolytic and adrenolytic effects.. ...
University of Lampung | LPPM-UNILA Institutional Repository (LPPM-UNILA-IR)University of Lampung | LPPM-UNILA Institutional Repository (LPPM-UNILA-IR)
Abstract : Artocarpus kemando Miq. is a species from Moraceae family in Indonesia know as Pudau plant. The purposes of this research are to isolate, characterize, modify and test the antibacterial activity to the artocarpin compounds isolated from pudau plants. The research stages includeed sample preparation, extraction, isolation, and purification of compounds using chromatographic techniques (TLC, VLC, and CC), characterization of compounds using spectroscopy. Isolated compound was obtained as a yellow crystal with a melting point of 185-187 oC. Based on the results of spectroscopic analysis indicated that it has been successfully isolated a prenylated flavonoid, artocarpin in the amount of 35.2 mg. The modification of artocarpin with acetic anhydride produced acetyled artocarpin as yellow crystal. Artocarpin and the modified compounds showed an antibacterial activity against Bacillus subtilis and Escherichia coli. Keywords : antibacterial, A. kemando Miq., Artocarpin, B. subtilis, E. ...
HypothesisHypothesis
6 Hz), 4.85 (1H, s); 13C NMR 853.28,65.12 (15 Hz, C3), 67.3 (24 Hz, C5), 69.72 (C2), 81.1 (JCF = 168 Hz, C4), 89.9 (JCF = 171 Hz, C4), 101.47 (C1). 1 ,2,3-Tri-O-acetyl-4,6-di-deoxy-4,6-difluoro-a-D-talopyranoside (73). To compound 72 (100 mg, 0.543 mmol) was added 2% sulfuric acid solution in acetic anhydride (1.2 ml). The mixture was stirred at rt for 90 minutes. The contents were diluted with saturated sodium bicarbonate solution. The mixture was extracted with ethyl acetate. The organic phase was thoroughly washed with water, dried over sodium sulfate and concentrated to afford 73. 2,3-Di-O-acetyl-4,6-di-deoxY-4,6-difluoro-a-D-talo-di-O-benzyl phosphate (75) : Compound 73 ( 70 mg, 0.225 mmol) was dissolved in anhydrous CH3CN saturated with dimethylamine (5 ml ) at -20°C and stirred for 3h after which TlC confirmed the disappearance of starting material. Excess of dimethylamine was removed under reduced pressure at 30°C and the reaction mixture was concentrated to afford 2,3, ...
Download e-book for kindle: Biopolymer Nanocomposites: Processing, Properties, and by Alain Dufresne, Sabu Thomas, Laly A....Download e-book for kindle: Biopolymer Nanocomposites: Processing, Properties, and by Alain Dufresne, Sabu Thomas, Laly A....
Extra resources for Biopolymer Nanocomposites: Processing, Properties, and Applications. Sample text. Since damaged fibers are not observed after chemical and mechanical treatments, aspect ratios of the NFs are good. The width of fibers varied slightly according to the type of mushrooms used. It is expected that preparation of CNFs from crab and prawn shells and vegetable source mushrooms will be applicable to other cell wall or skeleton-containing vegetable or animal sources. 5 wt% depending on the species of mushrooms. The details of elemental analysis and species-wise composition of elements and NFs have been described by Ifuku et al. 4° are charateristic of 020, 110, 120, and 130 planes, respectively. The spectra show typical antiparallel crystal pattern of α-chitin. 7°. 81, here about 50% of OH groups were substituted. 15. 96 preparation, which indicates that chitin diacetate is insoluble in the reaction mixture acetic anhydride. 96. 96. Scale 200 nm. the DS increased, the thickness of ...
Kinetics of the hydrolysis and perhydrolysis of tetraacetylethylenediamine, a peroxide bleach activator - Northumbria Research...Kinetics of the hydrolysis and perhydrolysis of tetraacetylethylenediamine, a peroxide bleach activator - Northumbria Research...
Hydrogen peroxide and water react with tetraacetylethylenediamine (TAED) to form consecutively triacetylethylenediamine and diacetylethylenediamine with the release of two molecules of peracetic acid or acetic acid. The effect of pH, specific buffers and temperature on the rates of hydrolysis and perhydrolysis are compared. Peracetic acid reacts with TAED very slowly. The ratio of the second-order rate constants for the reaction of TAED with hydroperoxide and peracetate anions is exceptionally large after taking into account the difference in pKa values of their conjugate acids. The relative reactivity of various nucleophiles with TAED is discussed in terms of its performance as a bleach activator.. ...
Total Synthesis of Dibromoagelaspongin by FeldmanTotal Synthesis of Dibromoagelaspongin by Feldman
The starting material for the chemistry described here was made in seven steps, from simple precursors. Treatment of the functionalised imidazole with triflic anhydride resulted in a Pummerer reaction, which could proceed in either of the two mechanisms below. Postulate a) is a vinylogous Pummerer, where a sulfonium ion is firstly formed along with an iminium ion. The two charges of the intermediate makes me feel bit uncomfortable… The other option is a more standard Pummerer, where the amide nitrogen attacks the imidazole directly, resulting in a spiro-fused intermediate that must do a 1,2 N-shift to give the 6,5-fused target.. Either way, the yield is fairly good for such a piece of chemistry!. ...
2016 Mephentermine (CAS 100-92-5) Industry Market Report : ReportsnReports2016 Mephentermine (CAS 100-92-5) Industry Market Report : ReportsnReports
[150 Pages Report] Check for Discount on 2016 Mephentermine (CAS 100-92-5) Industry Market Report report by Prof Research. The Global and Chinese Mephentermine Industry, 2011-2021 Market Research...
NZResearch.orgNZResearch.org
University of Canterbury Library This thesis examines the design, synthesis and biological applications of a series of inhibitors which incorporate an azobenzene photoswitch, a peptidyl backbone and a trifluoromethyl ketone warhead. The photoswitch can be isomerised by irradiation with UV or visible light and has been employed to modulate the reactivity of the enzyme. Chapter one gives a brief outline of some of the important areas related to this work. Examples of previously utilised photoswitches as well as some background on serine protease and the uses of fluorine in medicine has been covered. Chapter two outlines the synthesis of the key trifluoromethyl carbinol 2.6 by two different methods. The condensation of a fluorinated aldehyde with a nitroalkane affords an α-nitro trifluoromethyl carbinol which can be reduced to give the desired amine 2.6. Treatment of oxazolones with trifluoroacetic anhydride via a modified Dakin-West reaction gives trifluoromethyl ketones which can be reduced to ...
5-Fluoroisatoic Anhydride 321-69-7 H-NMR | C-NMR Spectral Analysis NMR Spectrum5-Fluoroisatoic Anhydride 321-69-7 H-NMR | C-NMR Spectral Analysis NMR Spectrum
5-Fluoroisatoic Anhydride 321-69-7 NMR spectrum, 5-Fluoroisatoic Anhydride H-NMR spectral analysis, 5-Fluoroisatoic Anhydride C-NMR spectral analysis ect.
4-Chlorophthalic Anhydride | 118-45-6 Molbase4-Chlorophthalic Anhydride | 118-45-6 Molbase
4-Chlorophthalic Anhydride | 118-45-6, chemical structure search 4-Chlorophthalic Anhydride including CAS No., molecular formula, chemical properties, chemical suppliers, price of chemical.
Anhydride AceticAnhydride Acetic
China Anhydride Acetic manufacturers - Select 2018 high quality Anhydride Acetic products in best price from certified Chinese Acetic manufacturers, Acetic Acid suppliers, wholesalers and factory on Made-in-China.com
2016 Tetrahydrophthalic anhydride (THPA) (CAS 935-79-5) Industry Market Report : ReportsnReports2016 Tetrahydrophthalic anhydride (THPA) (CAS 935-79-5) Industry Market Report : ReportsnReports
[150 Pages Report] Check for Discount on 2016 Tetrahydrophthalic anhydride (THPA) (CAS 935-79-5) Industry Market Report report by Prof Research. The Global and Chinese Tetrahydrophthalic anhydride (THPA) Industry, 2011-2021...
R)-(+)-2-Acetoxysuccinic anhydride 96% | Sigma-AldrichR)-(+)-2-Acetoxysuccinic anhydride 96% | Sigma-Aldrich
Sigma-Aldrich offers Aldrich-441570, (R)-(+)-2-Acetoxysuccinic anhydride for your research needs. Find product specific information including CAS, MSDS, protocols and references.
Effect of residual stress on the matrix fatigue cracking of rapidly cured epoxy/anhydride composites - DROEffect of residual stress on the matrix fatigue cracking of rapidly cured epoxy/anhydride composites - DRO
Joosten, Mathew W., Agius, Steven, Hilditch, Tim and Wang, Chun 2017, Effect of residual stress on the matrix fatigue cracking of rapidly cured epoxy/anhydride composites, Composites part A: applied science and manufacturing, vol. 101, pp. 521-528, doi: 10.1016/j.compositesa.2017.07.007. ...
Dissolution of paracetamol crystallized in the presence of poly(vinyl acetate-co-maleic anhydride)Dissolution of paracetamol crystallized in the presence of poly(vinyl acetate-co-maleic anhydride)
... , DA Raval, DN Parikh, VM Patel
Chemistry and Chemical Reactivity (9th Edition) Chapter 5 Principles of Chemical Reactivity: Energy and Chemical Reactions -...Chemistry and Chemical Reactivity (9th Edition) Chapter 5 Principles of Chemical Reactivity: Energy and Chemical Reactions -...
Chemistry and Chemical Reactivity (9th Edition) answers to Chapter 5 Principles of Chemical Reactivity: Energy and Chemical Reactions - Study Questions - Page 217g 99 including work step by step written by community members like you. Textbook Authors: Kotz, John C.; Treichel, Paul M.; Townsend, John R.; Treichel, David A., ISBN-10: 1133949649, ISBN-13: 978-1-13394-964-0, Publisher: Cengage Learning
Chemistry and Chemical Reactivity (9th Edition) Chapter 15 Principles of Chemical Reactivity: Equilibria - Study Questions -...Chemistry and Chemical Reactivity (9th Edition) Chapter 15 Principles of Chemical Reactivity: Equilibria - Study Questions -...
Chemistry and Chemical Reactivity (9th Edition) answers to Chapter 15 Principles of Chemical Reactivity: Equilibria - Study Questions - Page 583b 10 including work step by step written by community members like you. Textbook Authors: Kotz, John C.; Treichel, Paul M.; Townsend, John R.; Treichel, David A., ISBN-10: 1133949649, ISBN-13: 978-1-13394-964-0, Publisher: Cengage Learning
3,6-dichlorophthalic anhydride anion3,6-dichlorophthalic anhydride anion
The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database ...
Divergent synthesis and chemical reactivity of bicyclic lacton...Divergent synthesis and chemical reactivity of bicyclic lacton...
Divergent synthesis and chemical reactivity of bicyclic lactone fragments of complex rearranged spongian diterpenes.: The synthesis and direct comparison of the
N-Acetylanthranilic acidN-Acetylanthranilic acid
அசிட்டிக் காடி - தமிழ் விக்கிப்பீடியாஅசிட்டிக் காடி - தமிழ் விக்கிப்பீடியா
Development of analogs of thalidomideDevelopment of analogs of thalidomide
Friedel-Crafts reactionFriedel-Crafts reaction
اکسیژن - ویکی‌پدیا، دانشنامهٔ آزاداکسیژن - ویکی‌پدیا، دانشنامهٔ آزاد
OxygenOxygen
اتیلن - ویکی‌پدیا، دانشنامهٔ آزاداتیلن - ویکی‌پدیا، دانشنامهٔ آزاد
Carbon monoxideCarbon monoxide
RofecoxibRofecoxib
AspirinAspirin
PetrochemicalPetrochemical
EsterEster
TransferaseTransferase
Chromium trioxideChromium trioxide
AmmoniaAmmonia
Beckmann rearrangementBeckmann rearrangement
Vitamin B12 total synthesisVitamin B12 total synthesis
HistrionicotoxinsHistrionicotoxins
AcetylacetoneAcetylacetone
Lead(II,IV) oxideLead(II,IV) oxide
Natural productNatural product
Functional groupFunctional group
AcrylonitrileAcrylonitrile
ইউপ্যাক পদ্ধতিতে জৈব রসায়নের নামকরণ - উইকিপিডিয়াইউপ্যাক পদ্ধতিতে জৈব রসায়নের নামকরণ - উইকিপিডিয়া
AmideAmide
Tin(II) chlorideTin(II) chloride
Copper(II) nitrateCopper(II) nitrate
Sulfur dioxideSulfur dioxide
Wolff rearrangementWolff rearrangement
FerroceneFerrocene
OrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsAnthropology, Education, Sociology and Social PhenomenaTechnology, Industry, AgricultureInformation ScienceHealth CareGeographicals
Acetic AnhydridesAnhydridesSuccinic AnhydridesPhthalic AnhydridesMaleic AnhydridesAcetylationNeutral GlycosphingolipidsAcetatesCitraconic AnhydridesChemistryChemical PhenomenaLysineChromatography, Thin LayerMagnetic Resonance SpectroscopyTritiumEncyclopedias as TopicChemistry, OrganicDictionaries, MedicalDictionaries as TopicElectronic MailFood Dispensers, AutomaticEditorial PoliciesAuthorshipPeriodicals as TopicPostal ServiceInternetTalcAspergillus nigerEscherichia coli InfectionsProteomeWaterCounterfeit DrugsFraudWater PollutionHerbicidesPesticidesGas, NaturalSpainMetabolomeAgrochemicalsElectrophoresis, Cellulose Acetate
Acetic anhydride - WikipediaAcetic anhydride - Wikipedia
What is the reaction between acetic anhydride and water? | Reference.comWhat is the reaction between acetic anhydride and water? | Reference.com
Acetic anhydride - definition of acetic anhydride by The Free DictionaryAcetic anhydride - definition of acetic anhydride by The Free Dictionary
acetic anhydrides Protocols and Video...'acetic anhydrides' Protocols and Video...
Acetic anhydride - toxicity, ecological toxicity and regulatory informationAcetic anhydride - toxicity, ecological toxicity and regulatory information
Celanese mulls closure of VAM, acetic anhydride units in Spain, FranceCelanese mulls closure of VAM, acetic anhydride units in Spain, France
Human Metabolome Database: Showing metabocard for Acetic anhydride (HMDB0031646)Human Metabolome Database: Showing metabocard for Acetic anhydride (HMDB0031646)
World Acetic Anhydride Market: Opportunities and Forecasts, 2014 - 2020World Acetic Anhydride Market: Opportunities and Forecasts, 2014 - 2020
Acetic Acid Market by Derivatives & Applications - 2018 | MarketsandMarketsAcetic Acid Market by Derivatives & Applications - 2018 | MarketsandMarkets
From Cotton to Cellulose AcetateFrom Cotton to Cellulose Acetate
Aspirin SynthesisAspirin Synthesis
Acetic formic anhydride - WikipediaAcetic formic anhydride - Wikipedia
Acetic oxalic anhydride - WikipediaAcetic oxalic anhydride - Wikipedia
Acetic anhydrideAcetic anhydride
Acetic anhydrideAcetic anhydride
CDC - NIOSH Pocket Guide to Chemical Hazards - Acetic anhydrideCDC - NIOSH Pocket Guide to Chemical Hazards - Acetic anhydride
THE ACETIC ANHYDRIDE TEST IN CEREBRO-SPINAL FLUID | The BMJTHE ACETIC ANHYDRIDE TEST IN CEREBRO-SPINAL FLUID | The BMJ
SPECTRUM Acetic Anhydride, 500ml - 26XH54|A1668-500ML - GraingerSPECTRUM Acetic Anhydride, 500ml - 26XH54|A1668-500ML - Grainger
Acetic Anhydride, Reagent Grade, 100 mL | Carolina.comAcetic Anhydride, Reagent Grade, 100 mL | Carolina.com
China Anhydride Acetic, Anhydride Acetic Manufacturers, Suppliers | Made-in-China.comChina Anhydride Acetic, Anhydride Acetic Manufacturers, Suppliers | Made-in-China.com
Acetic acid, anhydride, reaction products with... - Registration Dossier - ECHAAcetic acid, anhydride, reaction products with... - Registration Dossier - ECHA
Acetylation of Wood Flour from Four Wood Species Grown in Nigeria Using Vinegar and Acetic AnhydrideAcetylation of Wood Flour from Four Wood Species Grown in Nigeria Using Vinegar and Acetic Anhydride
Acetic Anhydride Market, Sales, Consumption Status and Prospects 2025 | Apr 16, 2019 - ReleaseWireAcetic Anhydride Market, Sales, Consumption Status and Prospects 2025 | Apr 16, 2019 - ReleaseWire
Acetic Acid Market For VAM, PTA, Acetate Esters, Acetic Anhydride And Other Applications - Forecast to 2018Acetic Acid Market For VAM, PTA, Acetate Esters, Acetic Anhydride And Other Applications - Forecast to 2018
China Acetic Acid, China Acetic Anhydride, China Acetone, Products Catalog1China Acetic Acid, China Acetic Anhydride, China Acetone, Products Catalog1
Sciencemadness Discussion Board - Acetic anhydride preparation - Powered by XMB 1.9.11Sciencemadness Discussion Board - Acetic anhydride preparation - Powered by XMB 1.9.11
Asprin, C9H8O4, is prepared by reacting salicylic acid, C7H6O3, with acetic anhydride,Asprin, C9H8O4, is prepared by reacting salicylic acid, C7H6O3, with acetic anhydride,
Global Pet Coke to Chemicals Market By Derivative (Propylene, Ethylene, Oxo Chemicals, Methyl Acetate, Acetic Acid, Acetic...Global Pet Coke to Chemicals Market By Derivative (Propylene, Ethylene, Oxo Chemicals, Methyl Acetate, Acetic Acid, Acetic...
Acetic Anhydride 108-24-7, China Acetic Anhydride 108-24-7 Manufacturers, China Acetic Anhydride 108-24-7 Suppliers - gjchemicalAcetic Anhydride 108-24-7, China Acetic Anhydride 108-24-7 Manufacturers, China Acetic Anhydride 108-24-7 Suppliers - gjchemical
Copolymer-Transition Metal Complexes for Carbonyltion of Methanol to Acetic Acid and Acetic Anhydride--《Journal of Functional...Copolymer-Transition Metal Complexes for Carbonyltion of Methanol to Acetic Acid and Acetic Anhydride--《Journal of Functional...
Global Pet Coke to Chemicals Market By Derivative (Propylene, Ethylene, Oxo Chemicals, Methyl Acetate, Acetic Acid, Acetic...Global Pet Coke to Chemicals Market By Derivative (Propylene, Ethylene, Oxo Chemicals, Methyl Acetate, Acetic Acid, Acetic...
acetic anhydrideacetic anhydride
OrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsAnthropology, Education, Sociology and Social PhenomenaTechnology, Industry, AgricultureInformation ScienceHealth CareGeographicals
Acetic AnhydridesAnhydridesSuccinic AnhydridesPhthalic AnhydridesMaleic AnhydridesAcetylationNeutral GlycosphingolipidsAcetatesCitraconic AnhydridesChemistryChemical PhenomenaLysineChromatography, Thin LayerMagnetic Resonance SpectroscopyTritiumEncyclopedias as TopicChemistry, OrganicDictionaries, MedicalDictionaries as TopicElectronic MailFood Dispensers, AutomaticEditorial PoliciesAuthorshipPeriodicals as TopicPostal ServiceInternetTalcAspergillus nigerEscherichia coli InfectionsProteomeWaterCounterfeit DrugsFraudWater PollutionHerbicidesPesticidesGas, NaturalSpainMetabolomeAgrochemicalsElectrophoresis, Cellulose Acetate
Glacial acetVinyl acetateColorlessAcetylationAcetateEthanoicSynthesis2018ChemicalsAnhydrousLitersReactionReagentCompoundReactiveSolubleEthanolFlammableDerivativesActivatorAcid marketExcessHeroinHarmfulLaboratoriesInternationallyProductionGeographyMarket
Glacial acet1
  • For example, flammable liquids (acetone and the alcohols such as ethanol, methanol, isobutanol and t-butanol) are given high hazard ratings while glacial acetic acid, acetic anhydride and adipoyl chloride whose hazard lies in the inhalation of the vapour are given medium ratings. (thefreedictionary.com)
Vinyl acetate2
Colorless2
Acetylation2
Acetate8
Ethanoic2
Synthesis2
20181
Chemicals2
Anhydrous1
Liters1
  • ISLAMABAD -- Anti-Narcotics Force Pakistan seized 1.091 Tons narcotics and 1625 Liters Acetic Anhydride valuing Rs 1.25 Billion internationally, arrested 27 persons including 2 ladies involved in drug smuggling and impounded 7 vehicles while conducting 27 counternarcotics strikes across the country. (thefreedictionary.com)
Reaction3
Reagent1
Compound2
Reactive2
  • The internal asymmetry may contribute to acetic anhydride's potent electrophilicity as the asymmetric geometry makes one side of a carbonyl carbon more reactive than the other, and in doing so tends to consolidate the electropositivity of a carbonyl carbon to one side (see electron density diagram). (wikipedia.org)
  • Apart from being highly reactive to water, acetic anhydride is also flammable, generating dangerous vapours when heated. (reference.com)
Soluble1
Ethanol1
Flammable1
Derivatives2
Activator2
Acid market2
  • The acetic acid market has grown considerably during the past few years and is estimated to grow at a considerable pace in the next five years, mainly driven by the growing demand in the Asia-Pacific region. (marketsandmarkets.com)
  • This research report categorizes the global acetic acid market on the basis of applications and geography along with forecast of volume, value, and analyzing trends in each of the submarkets. (marketsandmarkets.com)
Excess1
Heroin1
Harmful2
Laboratories1
Internationally1
  • ISLAMABAD -- Anti-Narcotics Force Pakistan has seized 1.877 Tons narcotics and 2.52 Tons Acetic Anhydride valuing Rs 1.5 Billion internationally, arrested 29 persons including 6 ladies and 3 foreigners involved in drug smuggling and impounded 9 vehicles while conducting 24 counter-narcotics strikes across the country. (thefreedictionary.com)
Production1
Geography1
Market1
Acetic anhydride - Wikipedia
Acetic anhydride - Wikipedia (en.m.wikipedia.org)
Acetic anhydride - definition of acetic anhydride by The Free Dictionary
Acetic anhydride - definition of acetic anhydride by The Free Dictionary (thefreedictionary.com)
Human Metabolome Database: Showing metabocard for Acetic anhydride (HMDB0031646)
Human Metabolome Database: Showing metabocard for Acetic anhydride (HMDB0031646) (hmdb.ca)
Acetic anhydride
Acetic anhydride (webbook.nist.gov)
Iron on tear away stabilizer - iron on tear away stabilizer online Wholesalers
Iron on tear away stabilizer - iron on tear away stabilizer online Wholesalers (burrillandco.com)
Organics
Organics (mpbio.com)
Alphabetical Method Listing - A - NMAM 4th Edition | NIOSH | CDC
Alphabetical Method Listing - A - NMAM 4th Edition | NIOSH | CDC (cdc.gov)
Reaction Stoichiometry
Reaction Stoichiometry (brainmass.com)
Bulk Fine Chemicals | Spectrum Chemical
Bulk Fine Chemicals | Spectrum Chemical (spectrumchemical.com)
Substances Added to Food <em>(formerly...
Substances Added to Food <em>(formerly... (accessdata.fda.gov)
Acetic Anhydride Market, Sales, Consumption Status and Prospects 2025 | Apr 16, 2019 - ReleaseWire
Acetic Anhydride Market, Sales, Consumption Status and Prospects 2025 | Apr 16, 2019 - ReleaseWire (sbwire.com)
Caryophyllene, Reaction product with Acetic... - Registration Dossier - ECHA
Caryophyllene, Reaction product with Acetic... - Registration Dossier - ECHA (echa.europa.eu)
Tin(II) chloride
Tin(II) chloride (cs.mcgill.ca/~rwest/)
2004 - Exemption of Chemical Mixtures
2004 - Exemption of Chemical Mixtures (deadiversion.usdoj.gov)
Kirk-Othmer Encyclopedia of Chemical Technology, Index to Volumes 1 - 26, Book by Kirk-Othmer (Hardcover) | chapters.indigo.ca
Kirk-Othmer Encyclopedia of Chemical Technology, Index to Volumes 1 - 26, Book by Kirk-Othmer (Hardcover) | chapters.indigo.ca (chapters.indigo.ca)
When zinc powder added to acetic acid?
When zinc powder added to acetic acid? (wiki.answers.com)
Products in NEW! Organic Synthesis, BeanTown Chemical on Thomas Scientific
Products in NEW! Organic Synthesis, BeanTown Chemical on Thomas Scientific (thomassci.com)
Handbook of Petrochemicals and Processes: 1st Edition (Hardback) - Routledge
Handbook of Petrochemicals and Processes: 1st Edition (Hardback) - Routledge (routledge.com)
SPECTRUM Acetic Anhydride, 500ml - 26XH54|A1668-500ML - Grainger
SPECTRUM Acetic Anhydride, 500ml - 26XH54|A1668-500ML - Grainger (grainger.com)
Simple Accordion with CSS & jQuery by Soh Tanaka
Simple Accordion with CSS & jQuery by Soh Tanaka (orgsyn.org)
Category:Organic syntheses - Wikimedia Commons
Category:Organic syntheses - Wikimedia Commons (commons.wikimedia.org)
Acetylation of Wood Flour from Four Wood Species Grown in Nigeria Using Vinegar and Acetic Anhydride
Acetylation of Wood Flour from Four Wood Species Grown in Nigeria Using Vinegar and Acetic Anhydride (hindawi.com)
Not Allowed List
Not Allowed List (arbonne.com)
High Purity Primary Solvents | Semiconductor Materials | Fujifilm USA
High Purity Primary Solvents | Semiconductor Materials | Fujifilm USA (fujifilmusa.com)
City of Berkeley, MO Nuisance Properties
City of Berkeley, MO Nuisance Properties (ecode360.com)
A)Determination of serum cholesterol: ( i) Cholesterol ester+Cholesteryl esterase cholesterol+fatty acid
A)Determination of serum cholesterol: ( i) Cholesterol ester+Cholesteryl esterase cholesterol+fatty acid (scribd.com)
Liquid Epoxy Resin Clear Epoxy Resin And Epoxy Hardner By Titad General Trading (Pty) Limited, South Africa
Liquid Epoxy Resin Clear Epoxy Resin And Epoxy Hardner By Titad General Trading (Pty) Limited, South Africa (tradekey.com)
CAMP ELISA Kit (ab133039) | Abcam
CAMP ELISA Kit (ab133039) | Abcam (abcam.com)
US Congress's Take on the Heroin Epidemic. 6400 tons Produced in US-Occupied Afghanistan... - Global ResearchGlobal Research -...
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Simple Accordion with CSS & jQuery by Soh Tanaka
Simple Accordion with CSS & jQuery by Soh Tanaka (orgsyn.org)
Simple Accordion with CSS & jQuery by Soh Tanaka
Simple Accordion with CSS & jQuery by Soh Tanaka (orgsyn.org)