A colorless liquid with a sharp burning taste and slight odor. It is used as a local anesthetic and to reduce pain associated with LIDOCAINE injection. Also, it is used in the manufacture of other benzyl compounds, as a pharmaceutic aid, and in perfumery and flavoring.
A white crystalline compound prepared by condensation of benzaldehyde in potassium cyanide and used in organic syntheses. This should not be confused with benzoin gum from STYRAX.
Analogs or derivatives of mandelic acid (alpha-hydroxybenzeneacetic acid).
Alcohols derived from the aryl radical (C6H5CH2-) and defined by C6H5CHOH. The concept includes derivatives with any substituents on the benzene ring.
Oxidoreductases that are specific for ALDEHYDES.
An aldehyde oxidoreductase expressed predominantly in the LIVER; LUNGS; and KIDNEY. It catalyzes the oxidation of a variety of organic aldehydes and N-heterocyclic compounds to CARBOXYLIC ACIDS, and also oxidizes quinoline and pyridine derivatives. The enzyme utilizes molybdenum cofactor and FAD as cofactors.
Organic compounds containing a carbonyl group in the form -CHO.
A subclass of enzymes which includes all dehydrogenases acting on primary and secondary alcohols as well as hemiacetals. They are further classified according to the acceptor which can be NAD+ or NADP+ (subclass 1.1.1), cytochrome (1.1.2), oxygen (1.1.3), quinone (1.1.5), or another acceptor (1.1.99).
A widely used industrial solvent.
Enzymes that catalyze a reverse aldol condensation. A molecule containing a hydroxyl group and a carbonyl group is cleaved at a C-C bond to produce two smaller molecules (ALDEHYDES or KETONES). EC 4.1.2.
A genus of gram-negative bacteria of the family MORAXELLACEAE, found in soil and water and of uncertain pathogenicity.
Alkyl compounds containing a hydroxyl group. They are classified according to relation of the carbon atom: primary alcohols, R-CH2OH; secondary alcohols, R2-CHOH; tertiary alcohols, R3-COH. (From Grant & Hackh's Chemical Dictionary, 5th ed)
A fungistatic compound that is widely used as a food preservative. It is conjugated to GLYCINE in the liver and excreted as hippuric acid.
A family of isomeric, colorless aromatic hydrocarbon liquids, that contain the general formula C6H4(CH3)2. They are produced by the destructive distillation of coal or by the catalytic reforming of petroleum naphthenic fractions. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
The coenzyme form of Vitamin B1 present in many animal tissues. It is a required intermediate in the PYRUVATE DEHYDROGENASE COMPLEX and the KETOGLUTARATE DEHYDROGENASE COMPLEX.
A species of gram-negative, aerobic bacteria isolated from soil and water as well as clinical specimens. Occasionally it is an opportunistic pathogen.
Hydrogen cyanide (HCN); A toxic liquid or colorless gas. It is found in the smoke of various tobacco products and released by combustion of nitrogen-containing organic materials.
An enzyme that oxidizes an aldehyde in the presence of NAD+ and water to an acid and NADH. This enzyme was formerly classified as EC 1.1.1.70.
Compounds containing the PhCH= radical.
Miniaturized methods of liquid-liquid extraction.
A characteristic feature of enzyme activity in relation to the kind of substrate on which the enzyme or catalytic molecule reacts.
A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that is not known to be pathogenic for man, animals, or plants. Its organisms are spoilers for beers and ciders and in sweet English ciders they are the causative agents of a secondary fermentation known as "cider sickness." The species Z. mobilis is used for experiments in molecular genetic studies.
The volatile portions of substances perceptible by the sense of smell. (Grant & Hackh's Chemical Dictionary, 5th ed)
Organic esters of thioglycolic acid (HS-CH2COOH).
Isomeric forms and derivatives of pentanol (C5H11OH).
Derivatives of BENZOIC ACID. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain the carboxybenzene structure.
A genus of gram-negative, aerobic, rod-shaped bacteria widely distributed in nature. Some species are pathogenic for humans, animals, and plants.
The rate dynamics in chemical or physical systems.
A genus of gram-negative, aerobic, motile bacteria that occur in water and soil. Some are common inhabitants of the intestinal tract of vertebrates. These bacteria occasionally cause opportunistic infections in humans.
A species of nonpathogenic fluorescent bacteria found in feces, sewage, soil, and water, and which liquefy gelatin.
A solventless sample preparation method, invented in 1989, that uses a fused silica fiber which is coated with a stationary phase. It is used for sample cleanup before using other analytical methods.

Molecular characterization of the genes pcaG and pcaH, encoding protocatechuate 3,4-dioxygenase, which are essential for vanillin catabolism in Pseudomonas sp. strain HR199. (1/445)

Pseudomonas sp. strain HR199 is able to utilize eugenol (4-allyl-2-methoxyphenol), vanillin (4-hydroxy-3-methoxybenzaldehyde), or protocatechuate as the sole carbon source for growth. Mutants of this strain which were impaired in the catabolism of vanillin but retained the ability to utilize eugenol or protocatechuate were obtained after nitrosoguanidine mutagenesis. One mutant (SK6169) was used as recipient of a Pseudomonas sp. strain HR199 genomic library in cosmid pVK100, and phenotypic complementation was achieved with a 5.8-kbp EcoRI fragment (E58). The amino acid sequences deduced from two corresponding open reading frames (ORF) identified on E58 revealed high degrees of homology to pcaG and pcaH, encoding the two subunits of protocatechuate 3,4-dioxygenase. Three additional ORF most probably encoded a 4-hydroxybenzoate 3-hydroxylase (PobA) and two putative regulatory proteins, which exhibited homology to PcaQ of Agrobacterium tumefaciens and PobR of Pseudomonas aeruginosa, respectively. Since mutant SK6169 was also complemented by a subfragment of E58 that harbored only pcaH, this mutant was most probably lacking a functional beta subunit of the protocatechuate 3, 4-dioxygenase. Since this mutant was still able to grow on protocatechuate and lacked protocatechuate 4,5-dioxygenase and protocatechuate 2,3-dioxygenase, the degradation had to be catalyzed by different enzymes. Two other mutants (SK6184 and SK6190), which were also impaired in the catabolism of vanillin, were not complemented by fragment E58. Since these mutants accumulated 3-carboxy muconolactone during cultivation on eugenol, they most probably exhibited a defect in a step of the catabolic pathway following the ortho cleavage. Moreover, in these mutants cyclization of 3-carboxymuconic acid seems to occur by a syn absolute stereochemical course, which is normally only observed for cis, cis-muconate lactonization in pseudomonads. In conclusion, vanillin is degraded through the ortho-cleavage pathway in Pseudomonas sp. strain HR199 whereas protocatechuate could also be metabolized via a different pathway in the mutants.  (+info)

Hydroxylation reaction catalyzed by the Burkholderia cepacia AC1100 bacterial strain. Involvement of the chlorophenol-4-monooxygenase. (2/445)

The Burkholderia cepacia AC1100 strain, known to degrade the herbicide, 2,4,5-Trichlorophenoxyacetic acid (2,4,5-T), is able to metabolize 4-hydroxyarylaldehyde, not only into the corresponding acid, but also into a new hydroquinone, 2,5-dihydroxyarylaldehyde. When incubated with resting AC1100 cells or cell-free extracts, syringaldehyde and 3,5-dimethoxy-4-hydroxybenzaldehyde were converted into such metabolites, identified by comparison of their mass and 1H-NMR spectra with those of authentic chemically synthesized samples. With 5-bromovanillin, only one metabolite was formed, the structure of which was identified as 2, 5-dihydroxy-4-methoxy-6-bromobenzaldehyde through 1H-NMR two-dimensional NOESY experiments. All these products result formally from a para hydroxylation of the phenol followed by the cis migration of the aldehyde. This reaction is the only one to be associated with the 2,4,5-T degradation pathway, as the acid formation was retained when the AC1100 strain had lost its degradation ability. Through competitive experiments with halophenols and methimazole, an alternative substrate of flavin monooxygenase, the chlorophenol-4-monooxygenase was recognized to be the enzyme involved in the hydroxylation of 4-hydroxyarylaldehyde. The purified enzyme, previously reported to catalyze the para hydroxylation or dehalogenating hydroxylation of chlorophenols, also promotes this hydroxylation reaction in the presence of NADH and FAD. The kcat value determined for the best substrate, syringaldehyde, 0. 08 s-1, was about 20% of that obtained for 2,6-dichlorophenol hydroxylation (0.38 s-1).  (+info)

Olfactory adaptation depends on the Trp Ca2+ channel in Drosophila. (3/445)

Olfactory adaptation is shown to occur in Drosophila, at both behavioral and physiological levels. In a behavioral paradigm, the extent of adaptation is shown to depend on the dose and duration of the adapting stimulus. Half-maximal adaptation occurred after 15 sec of exposure to an odor, and recovery occurred with a half-time of 1. 5 min, under a set of test conditions. Cross-adaptation was observed among all odor combinations tested, although to a lesser extent than when the same odor was used as both the adapting and the test stimulus. Mutants of the transient receptor potential (Trp) Ca2+ channel were normal in olfactory response, but defective in olfactory adaptation, when measured either behaviorally or in tests of antennal physiology. These results indicate that olfactory response and adaptation can be distinguished. Trp expression was detected in the developing antenna but, surprisingly, not in the mature antenna. These results, together with temperature-shift analysis of a temperature-sensitive trp mutant, provide evidence of a role of Trp in olfactory system development.  (+info)

Odor response properties of rat olfactory receptor neurons. (4/445)

Molecular biology studies of olfaction have identified a multigene family of molecular receptors that are likely to be involved in odor transduction mechanisms. However, because previous functional data on peripheral coding were mainly collected from inferior vertebrates, it has been difficult to document the degree of specificity of odor interaction mechanisms. As a matter of fact, studies of the functional expression of olfactory receptors have not demonstrated the low or high specificity of olfactory receptors. In this study, the selectivity of olfactory receptor neurons was investigated in the rat at the cellular level under physiological conditions by unitary extracellular recordings. Individual olfactory receptor neurons were broadly responsive to qualitatively distinct odor compounds. We conclude that peripheral coding is based on activated arrays of olfactory receptor cells with overlapping tuning profiles.  (+info)

cDNA cloning, expression and activity of a second human aflatoxin B1-metabolizing member of the aldo-keto reductase superfamily, AKR7A3. (5/445)

The aflatoxin B1 (AFB1) aldehyde metabolite of AFB1 may contribute to the cytotoxicity of this hepatocarcinogen via protein adduction. Aflatoxin B1 aldehyde reductases, specifically the NADPH-dependent aldo-keto reductases of rat (AKR7A1) and human (AKR7A2), are known to metabolize the AFB1 dihydrodiol by forming AFB1 dialcohol. Using a rat AKR7A1 cDNA, we isolated and characterized a distinct aldo-keto reductase (AKR7A3) from an adult human liver cDNA library. The deduced amino acid sequence of AKR7A3 shares 80 and 88% identity with rat AKR7A1 and human AKR7A2, respectively. Recombinant rat AKR7A1 and human AKR7A3 were expressed and purified from Escherichia coli as hexa-histidine tagged fusion proteins. These proteins catalyzed the reduction of several model carbonyl-containing substrates. The NADPH-dependent formation of AFB1 dialcohol by recombinant human AKR7A3 was confirmed by liquid chromatography coupled to electrospray ionization mass spectrometry. Rabbit polyclonal antibodies produced using recombinant rat AKR7A1 protein were shown to detect nanogram amounts of rat and human AKR7A protein. The amount of AKR7A-related protein in hepatic cytosols of 1, 2-dithiole-3-thione-treated rats was 18-fold greater than in cytosols from untreated animals. These antibodies detected AKR7A-related protein in normal human liver samples ranging from 0.3 to 0.8 microg/mg cytosolic protein. Northern blot analysis showed varying levels of expression of AKR7A RNA in human liver and in several extrahepatic tissues, with relatively high levels in the stomach, pancreas, kidney and liver. Based on the kinetic parameters determined using recombinant human AKR7A3 and AFB1 dihydrodiol at pH 7.4, the catalytic efficiency of this reaction (k2/K, per M/s) equals or exceeds those reported for other enzymes, for example cytochrome P450s and glutathione S-transferases, known to metabolize AFB1 in vivo. These findings indicate that, depending on the extent of AFB1 dihydrodiol formation, AKR7A may contribute to the protection against AFB1-induced hepatotoxicity.  (+info)

Basic emotions evoked by eugenol odor differ according to the dental experience. A neurovegetative analysis. (6/445)

Subjective individual experiences seem to indicate that odors may form strong connections with memories, especially those charged with emotional significance. In the dental field, this could be the case with the odorant eugenol, responsible for the typical clinging odor impregnating the dental office. The odor of eugenol could evoke memories of unpleasant dental experiences and, therefore, negative feelings such as anxiety and fear, since eugenates (cements containing eugenol) are used in potentially painful restorative dentistry. This hypothesis was tested by evaluating the emotional impact of the odor of eugenol through autonomic nervous system (ANS) analysis. The simultaneous variations of six ANS parameters (two electrodermal, two thermovascular and two cardiorespiratory), induced by the inhalation of this odorant, were recorded on volunteer subjects. Vanillin (a pleasant odorant) and propionic acid (an unpleasant one) served as controls. After the experiment, subjects were asked to rate the pleasantness versus unpleasantness of each odorant on an 11-point hedonic scale. The patterns of autonomic responses, obtained for each odorant and each subject, were transcribed into one of the six basic emotions defined by Ekman et al. (happiness, surprise, sadness, fear, anger and disgust). Results were compared between two groups of subjects divided according to their dental experience (fearful and non-fearful dental care subjects) and showed significant differences only for eugenol. This odorant was rated as pleasant by non-fearful dental subjects but unpleasant by fearful dental subjects. The evoked autonomic responses were mainly associated with positive basic emotions (happiness and surprise) in non-fearful dental subjects and with negative basic emotions (fear, anger, disgust) in fearful dental subjects. These results suggest that eugenol can be responsible for different emotional states depending on the subjects' dental experience, which seems to confirm the potential role of odors as elicitors of emotional memories. This study also supports the possible influence of the ambient odor impregnating the dental office, strengthening a negative conditioning toward dental care in some anxious patients.  (+info)

Study of the (S)-hydroxynitrile lyase from Hevea brasiliensis: mechanistic implications. (7/445)

Investigations of the (S)-selective hydroxynitrile lyase from Hevea brasiliensis were performed by electrospray mass spectroscopy, (1)H-NMR and with an enzyme activity assay. For the trans-cyanohydrin reaction (transcyanation) a two step reaction could be established. The results furthermore indicate a fast deactivation of the enzyme at low pH and a strong substrate dependence of its stability. They rule out an enzyme-HCN complex or a covalently bound carbonyl compound. Therefore the earlier postulated reaction intermediate as well as the proposed action of the catalytic triad have to be reevaluated. The calculated molecular mass could be confirmed by mass spectroscopy.  (+info)

Environmental signals modulate olfactory acuity, discrimination, and memory in Caenorhabditis elegans. (8/445)

Caenorhabditis elegans uses a variety of attractive olfactory cues to detect food. We show here that the responses to olfactory cues are regulated in a dynamic way by behavioral context and the animal's previous experience. Prolonged exposure to an odorant leads to a decreased response to that odorant, a form of behavioral plasticity called olfactory adaptation. We show that starvation can increase the extent of olfactory adaptation to the odorant benzaldehyde; this effect of starvation persists for several hours after the animals have been returned to food. The effect of starvation is antagonized by exogenous serotonin, which induces many of the same behavioral responses in C. elegans as are induced by food. Starvation also inhibits recovery from adaptation to a different odorant, 2-methylpyrazine, thus enhancing olfactory memory. In addition to its effects on adaptation, starvation modulates olfactory discrimination in C. elegans; starved animals discriminate more classes of odorants than fed animals. Increased olfactory discrimination is also seen in the adaptation-defective mutant adp-1 (ky20). These various forms of behavioral plasticity enhance the ability of starved animals to respond to novel, potentially informative odorants.  (+info)

... and similar chemicals occur naturally in many foods. Most of the benzaldehyde that people eat is from natural ... Benzaldehyde is also a precursor to certain acridine dyes. Via aldol condensations, benzaldehyde is converted into derivatives ... Benzyl alcohol can be formed from benzaldehyde by means of hydrogenation. Reaction of benzaldehyde with anhydrous sodium ... Amygdalin 2 H2O HCN benzaldehyde 2 × glucose 2 × Benzaldehyde contributes to the scent of oyster mushrooms (Pleurotus ostreatus ...
In enzymology, a benzaldehyde dehydrogenase (NADP+) (EC 1.2.1.7) is an enzyme that catalyzes the chemical reaction benzaldehyde ... Other names in common use include NADP+-linked benzaldehyde dehydrogenase, and benzaldehyde dehydrogenase (NADP+). This enzyme ... The systematic name of this enzyme class is benzaldehyde:NADP+ oxidoreductase. ... 2 H+ The 3 substrates of this enzyme are benzaldehyde, NADP+, and H2O, whereas its 3 products are benzoate, NADPH, and H+. This ...
In enzymology, a benzaldehyde dehydrogenase (NAD+) (EC 1.2.1.28) is an enzyme that catalyzes the chemical reaction benzaldehyde ... The systematic name of this enzyme class is benzaldehyde:NAD+ oxidoreductase. Other names in common use include benzaldehyde ( ... 2 H+ The 3 substrates of this enzyme are benzaldehyde, NAD+, and H2O, whereas its 3 products are benzoate, NADH, and H+. This ... NAD+) dehydrogenase, and benzaldehyde dehydrogenase (NAD+). This enzyme participates in benzoate degradation via hydroxylation ...
Brühne, Friedrich; Wright, Elaine (2011). "Benzaldehyde". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. ...
Wright, Elaine & Brühne, Friedrich (2000). Benzaldehyde. Ullmann's Encyclopedia of Industrial Chemistry. p. 8. doi:10.1002/ ... The chemical is produced by either the Henry reaction of benzaldehyde and nitromethane or by direct nitration of styrene using ...
It can also be synthesized by the Tishchenko reaction, using benzaldehyde with sodium benzyloxide (generated from sodium and ... Brühne, Friedrich; Wright, Elaine (15 October 2011). "Benzaldehyde". Ullmann's Encyclopedia of Industrial Chemistry. Wiley. doi ...
The O-benzyl structure then undergoes a pericyclic reaction to produce a benzaldehyde, with dimethyloxime as a byproduct. ... A General Synthesis of Substituted Benzaldehydes". J. Am. Chem. Soc. 71 (5): 1767-1769. doi:10.1021/ja01173a066. Bersohn, ... is an organic oxidation reaction that converts benzyl halides into benzaldehydes using the sodium salt of 2-nitropropane as the ...
Merck Index, 11th Edition, 8295 Brühne, F.; Wright, E. "Benzaldehyde". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim ...
... benzaldehyde". pubchem.ncbi.nlm.nih.gov. Retrieved 24 December 2021. Ehmann, A. (1977). "The van URK-Salkowski reagent - a ...
The furan-derived compounds 4-(furan-3-yl)benzaldehyde and 4-(5-oxotetrahydrofuran-3-yl)benzaldehyde have been identified as ... Kokubun, Tetsuo; Rozwadowski, Zbigniew; Duddeck, Helmut (2007). "Benzaldehyde derivatives from Sarcodontia crocea". Journal of ...
Matsumoto, M.; Kobayashi, K.; Hotta, Y. (1984). "Acid-catalyzed oxidation of benzaldehydes to phenols by hydrogen peroxide". ... "The oxidation of hydroxy derivatives of benzaldehyde, acetophenone, and related substances". American Chemical Journal. 42 (6 ...
"Antibacterial benzaldehydes produced by seaweed-derived Streptomyces atrovirens PK288-21". Fisheries Science. 78 (5): 1065-1073 ...
It is one of main benzaldehyde component of automobile exhaust. Benzaldehyde 4-Methylbenzaldehyde Salicylaldehyde H. B. Hass; ...
The compound is structurally related to benzaldehyde. This compound is popular commercially because of its pleasant woody ...
Benzaldehyde, for bees Butopyronoxyl (trade name Indalone). Widely used in a "6-2-2" mixture (60% Dimethyl phthalate, 20% ...
Darzens reaction between benzaldehyde and chloroacetate esters. Wacker oxidation of styrene. Hofmann rearrangement of ...
The respiratory irritants were Acrolein and Benzaldehyde. In part three of the experiment series, polar narcotics phenol, 2,4- ... Acrolein and Benzaldehyde". Environmental Toxicology and Chemistry. 6 (4): 313-328. doi:10.1002/etc.5620060408. Bradbury SP, ...
nov., two novel anaerobic, benzaldehyde-converting bacteria". International Journal of Systematic and Evolutionary Microbiology ...
Like many benzaldehydes, isophthalaldehyde forms a variety of Schiff base derivatives. Being bifunctional (having two formyl ...
The solution cannot differentiate between benzaldehyde and acetone. The net reaction between an aldehyde and the copper(II) ...
Similarly, toluene reacts with CYP450 to form benzaldehyde. Hippuric acid is readily hydrolysed by hot caustic alkalis to ... In all of the aforementioned cases, benzaldehyde undergoes biotransformation via CYP450 to benzoic acid followed by conjugation ... and benzaldehyde. Alternatively, under certain conditions, phenylpyruvic acid may undergo a redox mechanism, such as Iron(II) ... react with the alpha carbon subsequently form an dioxetanol intermediate followed by formation of oxalic acid and benzaldehyde ...
Female antennae can detect benzaldehyde and acetic acid. It has been shown that females are more likely to choose males with ... Males have specific scent organs called hair-pencils that contain benzyl alcohol in young males as well as benzaldehyde and ...
Benzaldehyde is used for cherry or almond flavoring. Cinnamaldehyde is used for cinnamon flavoring. Cresol is used for leathery ... benzaldehyde, cresol, butyraldehyde, and isoamyl acetate. Sugars are frequently used in e-liquids to provide a sweet flavor. ...
Oxidation of toluene to benzaldehyde is quite a useful conversion. Benzaldehyde is routinely used for its almond flavor. The ... Benzaldehyde can serve as a precursor for various compounds, including dyes, perfumes, and pharmaceuticals. For example, the ... For example, toluene can be oxidized to benzaldehyde. It is named for the French chemist Alexandre Léon Étard (5 January 1852, ... The Étard reaction is most commonly used as a relatively easy method of converting toluene into benzaldehyde. Obtaining ...
Final Report on the Safety Assessment of Benzaldehyde. In: International Journal of Toxicology. 25, 2006, p. 11-27, doi:10.1080 ... The disubstituted benzal chloride is converted to benzaldehyde, a popular flavorant and intermediate for the production of ...
In the classic example, benzaldehyde is converted to benzoin. The benzoin condensation was first reported in 1832 by Justus von ... Some aldehydes can only donate protons, such as 4-dimethylaminobenzaldehyde whereas benzaldehyde is both a proton acceptor and ...
Benzaldehyde does not have a systematic form with -al. International Union of Pure and Applied Chemistry, Commission on ...
The yeast is left to grow for a period of time, after which the benzaldehyde is introduced into the broth. The yeast then ... R)-PAC is widely synthesized by fermentation of benzaldehyde and dextrose. In this process, colonies of yeast (in particular, ... coli condense pyruvate and benzaldehyde into R-PAC. Such methods have much higher conversion rates in comparison to the ... "Biotransformation of benzaldehyde into ( R )-phenylacetylcarbinol by filamentous fungi or their extracts". Applied Microbiology ...
Brown, E. V.; Shambhu, M. B. (1971). "Hammick reaction of methoxypyridine-2-carboxylic acids with benzaldehyde. Preparation of ...
Benzoin is synthesized from benzaldehyde in the benzoin condensation. It is chiral and it exists as a pair of enantiomers: (R)- ... Benzoin is prepared from benzaldehyde via the benzoin condensation. Wöhler, Liebig; Liebig (1832). "Untersuchungen über das ... which is benzaldehyde with traces of hydrocyanic acid. The catalytic synthesis by the benzoin condensation was improved by ...
be decomposed by water or alcohol to form benzaldehyde (reaction IV).. Electric Benzaldehyde. jono - 16-6-2010 at 02:44. Hey, ... The benzaldehyde/DCM solution was dried with MgSO4, the DCM and residual toluene evaporated off. The benzaldehyde was vac ... The residual solution will always smell powerfully of benzaldehyde as benzaldehyde has a funny affect on the olfactory sense, ... benzaldehyde, and prussic acid.[2] Later research showed that sulfuric acid decomposes it into d-glucose, benzaldehyde, and ...
Buy Benzaldehyde in Fujairah from known Benzaldehyde Manufacturers in Fujairah, Suppliers and Exporters - Silverline Chemicals ... How Can Your Benzaldehyde Help Me?. Here is the list of various health benefits of Benzaldehyde that makes it the choice of all ... Which Company Benzaldehyde Should I Buy?. Silverline Chemicals is one of the prominent Benzaldehyde Manufacturers in India that ... Find The Best Benzaldehyde In Fujairah With Us. Silverline Chemicals have become a respectable entity to get Benzaldehyde In ...
CAS: 186191-19-5 Synonyms: 3-(2-Bromoethoxy)benzenecarboxaldehyde
Benzaldehyde can arise in beer in a number of ways, including non-enzymic, enzymic and microbiological routes. ... The best way to detect benzaldehyde flavours notes is as follows. Cover the glass with your hand and swirl the glass to release ...
... What is density of benzaldehyde? The solubilities of 4-(methylsulfonyl)benzaldehyde in the ... The density of benzaldehyde is 1,044 g/cm3. Table 3 Hydrocarbon Solubility in Methanol Table 3 The n -heptane layer was washed ... Click the test you would like to run on benzaldehyde. A comparison of hydrocarbon solubility as predicted by PROSIM to selected ... From: Comprehensive Organometallic Chemistry II, 1995 Related terms: Benzaldehyde. We frequently find that the borderline of ...
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View trade data on Brazil imports of benzaldehyde ... Access genuine benzaldehyde import data of Brazil. View trade ... Benzaldehyde (benzoic aldehyde). 19. 1. QUILOGRAMA LIQUIDO. 1. *****. *****. 2016. 9. Santos. Maritima. Netherlands Netherlands ... A sample report with few shipment records on Brazil imports of benzaldehyde is given above. We also cover other hidden columns ... So, if you want to access our customs data of benzaldehyde, kindly fill up our Request Demo Form. Our sales representatives ...
LBXBZAL - Benzaldehyde (ng/mL). Variable Name: LBXBZAL. SAS Label: Benzaldehyde (ng/mL). English Text: Benzaldehyde (ng/mL). ... LBDBZLC - Benzaldehyde Comment Code. Variable Name: LBDBZLC. SAS Label: Benzaldehyde Comment Code. English Text: Benzaldehyde ...
Transition Metal-Promoted Carbon-Silicon Solid Acid Catalysts for the Synthesis and Process Optimization of Benzaldehyde Glycol ... the C-Fe-Si catalyst exhibited the optimal catalytic activity with the benzaldehyde glycol acetal (BEGA) yield of 97.67 %, in ... 1 8 were fabricated and exploited for acetalization of benzaldehyde (BzH) with ethylene glycol (EG). The physical and chemical ...
Benzaldehyde. 3. 7.70. 120. Acetophenone. 4. 15.1. 208. Styrene dimer. Publishers Note: MDPI stays neutral with regard to ...
Shop / Unkategorisiert / 2,6-Dimethyl 4-hydroxy benzaldehyde - 70547-87-4 - 4-Hydroxy-2,6-dimethylbenzaldehyde - C9H10O2. ... 2,6-Dimethyl 4-hydroxy benzaldehyde - 70547-87-4 - 4-Hydroxy-2,6-dimethylbenzaldehyde - C9H10O2 quantity. ...
5B). The geometrical mean EC50 values for acetophenone and benzaldehyde were 19.9 μm (n = 13) and 98.4 μm (n = 5) respectively ... EC50 values for acetophenone and benzaldehyde for this cell are 14 and 150 μm,respectively. B, Plot of EC50 values obtained ... All 21 neurons responded to acetophenone at or above 25 μm, whereas 11 of 15 cells responded to benzaldehyde at or above 25 μm ... Responses are observed to the mix F component acetophenone and to the mix D component benzaldehyde. Absence of a dot indicates ...
BENZALDEHYDE. Bitter Almond. BENZALDEHYDE EEC. Bitter Almond. BENZALDEHYDE NAT. Bitter Almond. Benzodihydropyrone. Sweet, ...
Jiangsu Wanlong Chemical Co., Ltd. is one of the leading manufacturers in aromatic compounds industry and it is the biggest supplier of benzoyl chloride and benzyl chloride derivatives with annual...
Instead of pure maleic acid, 10.6 g. (0.1 mole) of pure benzaldehyde may be used for the standardization. In this case 1 cc. of ... 0.1 molar ferrous sulfate is added to the mixture of benzaldehyde, alcohol and catalyst before the reduction is started (see ...
Cherry-flavoured electronic cigarettes expose users to the inhalation irritant, benzaldehyde. Thorax. 2016;71(4):376-7. https ...
Benzaldehyde (1.0-2.3 ppb) and acetone (0.7-18.0 ppb) were quantified in emissions from four of the printers and 4-oxopentanal ... Benzaldehyde; Author Keywords: 3-dimensional printing; digital light processing; stereolithography; ultrafine particles; vat ...
Benzaldehyde. Benzene. Benzonitrile. Butadiene. Butene. 3-Butenenitrile. Carbon monoxide. Creosol. 1-Decene. 2,3-Dihydro indene ...
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... benzaldehyde*; benzeneacetaldehyde, cyclic acetal with glycerol; benzyl alcohol*; beta-caryophyllene*; citronellol*; citrus ...
Reactions of aromatic isothiocyanates with benzaldehydes. V. Knoppová, E. Komanová, K. Kada, A. Jurášek and J. Kováč ...
It was discovered by accident while reacting ethylene and benzaldehyde at high pressure. The demands of war and the need for a ...
Put a drop of the extraction on a 4-(dimethylamino)-benzaldehyde impregnated piece of filter (or chromatographical) paper. * ...
benzaldehyde dehydrogenase activity. 1.05577641583555. bayes_pls_golite062009. *3-hydroxyacyl-CoA dehydrogenase activity ...
A student accidentally stuck themselves while working with a needle to dispense benzaldehyde. The student washed the affected ...
(S)-1-(tert-Butoxycarbonyl)-4,4-difluoropyrrolidine-2-carboxylic acid, N-t-BOC-4,4-Difluoro-L-Proline, 203866-15-3, MFCD03094917
Cherry-flavoured electronic cigarettes expose users to the inhalation irritant, benzaldehyde. Thorax. 2016;71(4):376-7. https ...
Measurement of l-mandelate dehydrogenase, phenylgly-oxylate carboxy-lyase and benzaldehyde dehydrogenase 1 in bacterial ... There were transient accumulations of benzaldehyde and benzyl alcohol caused by the limitation of l-mandelate oxidation by low ... activities of benzaldehyde dehydrogenase and the diversion of reducing power to the formation of benzyl alcohol. In vivo ... Livingstone A., Fewson C. A., Kennedy S. I. T., Zatman L. J. 1972; Two benzaldehyde dehydrogenases in bacterium N.C.I.B. 8250. ...
  • While it is commonly employed as a commercial food flavourant ( almond flavour) or industrial solvent , benzaldehyde is used chiefly in the synthesis of other organic compounds, ranging from pharmaceuticals to plastic additives. (wikidoc.org)
  • Synthesis of benzaldehyde, heat phenylalanine with 5N NaOH solution for 5 hours, at 110 C, it then decomposes, yielding benzaldehyde. (sciencemadness.org)
  • Transition Metal-Promoted Carbon-Silicon Solid Acid Catalysts for the Synthesis and Process Optimization of Benzaldehyde Glycol Acetal. (bvsalud.org)
  • Benzyl alcohol can be formed from benzaldehyde by means of hydrogenation or by treating the compound with alcoholic potassium hydroxide thus undergoing a simultaneous oxidation and reduction which result in the production of potassium benzoate and benzyl alcohol. (wikidoc.org)
  • Among various examined acidic C-M-Si catalysts, the C-Fe-Si catalyst exhibited the optimal catalytic activity with the benzaldehyde glycol acetal (BEGA) yield of 97.67 %, in excellent agreement with the value (97.88 %) predicted by the response surface methodology (RSM) based on a Box-Behnken design (BBD). (bvsalud.org)
  • Template:Chembox new Benzaldehyde (C 6 H 5 CHO) is a chemical compound consisting of a benzene ring with an aldehyde substituent. (wikidoc.org)
  • On oxidation, benzaldehyde is converted into unpleasant smelling benzoic acid . (wikidoc.org)
  • An NADP+ dependent enzyme that catalyzes the oxidation of benzaldehyde to BENZOIC ACID. (bvsalud.org)
  • Currently benzaldehyde is primarily made from toluene by a number of different processes. (wikidoc.org)
  • The benzaldehyde/DCM solution was dried with MgSO4, the DCM and residual toluene evaporated off. (sciencemadness.org)
  • Benzaldehyde (1.0-2.3 ppb) and acetone (0.7-18.0 ppb) were quantified in emissions from four of the printers and 4-oxopentanal (0.07 ppb) was detectable in the emissions from one printer. (cdc.gov)
  • At room temperature it is a colorless liquid with a characteristic and pleasant almond -like odor: benzaldehyde is an important component of the scent of almonds, hence its typical odor. (wikidoc.org)
  • This glycoside breaks up under enzyme catalysis into benzaldehyde, hydrocyanic acid and two molecules of glucose . (wikidoc.org)
  • The activity, termed benzaldehyde carboxyligase (BCL) required the presence of magnesium and thiamine pyrophosphate and was 40 times higher in E. sinica as compared to E. foeminea. (nih.gov)
  • Silverline Chemicals have become a respectable entity to get Benzaldehyde In Fujairah . (silverlinechemicals.com)
  • Silverline Chemicals is one of the prominent Benzaldehyde Manufacturers in India that extract Benzaldehyde from different parts of the plant, including leaves, bark, flowers, twigs, and fruits, by the process of steam/hydro distillation. (silverlinechemicals.com)
  • The solubilities of 4-(methylsulfonyl)benzaldehyde in the binary mixed solvents acetonitrile + methanol, acetonitrile + ethanol and acetonitrile + isopropanol were determined experimentally using an isothermal dissolution equilibrium method within the temperature range from 283.15 to 318.15 K under atmospheric pressure. (regulatory.ie)
  • Reaction of benzaldehyde with anhydrous sodium acetate and acetic anhydride yields cinnamic acid , while alcoholic potassium cyanide can be used to catalyze the condensation of benzaldehyde to benzoin . (wikidoc.org)
  • A sample report with few shipment records on Brazil imports of benzaldehyde is given above. (brazilexim.com)
  • We also cover other hidden columns in our complete benzaldehyde import data of Brazil including - Importer Name, Exporter Name, Quantity of Shipment, Total Value of Shipment, Origin & Destination of Shipment and so on. (brazilexim.com)
  • So, if you want to access our customs data of benzaldehyde , kindly fill up our Request Demo Form. (brazilexim.com)
  • From: Comprehensive Organometallic Chemistry II, 1995 Related terms: Benzaldehyde. (regulatory.ie)
  • Solid-phase microextraction analysis of freshly picked young E. sinica and E. foeminea stems revealed the presence of increased benzaldehyde levels in E. foeminea, whereas 1-phenylpropane-1,2-dione was detected only in E. sinica. (nih.gov)
  • While this isn't related to benzaldehyde, I did offer the paper and several members have asked me for it so I will provide it here for their convenience. (sciencemadness.org)
  • Put a drop of the extraction on a 4-(dimethylamino)-benzaldehyde impregnated piece of filter (or chromatographical) paper. (erowid.org)
  • Click the test you would like to run on benzaldehyde. (regulatory.ie)
  • Genetic Toxicity Evaluation of Benzaldehyde in Salmonella/E.coli Mutagenicity Test or Ames Test. (nih.gov)
  • Here is the list of various health benefits of Benzaldehyde that makes it the choice of all. (silverlinechemicals.com)
  • Evaluation results revealed that the inclusion of isoniazid core into 1H-1,2,3-triazole tethered isatin-benzaldehydes improved the antimycobacterial activity on tuberculosis mc 2 6230 strain and significantly reduced the cytotoxicity against Vero cells. (nih.gov)
  • Genetic Toxicity Evaluation of Benzaldehyde in Salmonella/E.coli Mutagenicity Test or Ames Test. (nih.gov)
  • 7. Effects of benzaldehyde on survival and cell-cycle kinetics of human cells cultivated in vitro. (nih.gov)
  • 14. Effects of benzaldehyde on protein metabolism-of human cells cultivated in vitro. (nih.gov)