In the title mol-ecular salt, C6H9N2 (+)·C7H4NO4 (-), the original pyridine N atom of 2-amino-4-methyl-pyridine is protonated and the carb-oxylic acid group of nitro-benzoic acid is deprotonated. In the crystal, the ions are linked by N-H⋯O hydrogen bonds, forming chains propagating along [001]. The chains are linked via C-H⋯O hydrogen bonds, forming two-dimensional networks lying parallel to t...

Identification and relative quantification of hundreds to thousands of proteins within complex biological samples have become realistic with the emergence of stable isotope labeling in combination with high throughput mass spectrometry. However, all current chemical approaches target a single amino acid functionality (most often lysine or cysteine) despite the fact that addressing two or more a...

1. The urinary excretion of orally administered [(14)C]benzoic acid in man and 20 other species of animal was examined. 2. At a dose of 50mg/kg, benzoic acid was excreted by the rodents (rat, mouse, guinea pig, golden hamster, steppe lemming and gerbil), the rabbit, the cat and the capuchin monkey almost entirely as hippuric acid (95-100% of 24h excretion). 3. In man at a dose of 1mg/kg and the...

Fabrication of a test strip for detection of benzoic acid was successfully implemented by immobilizing tyrosinase, phenol and 3-methyl-2-benzothiazolinone hydrazone (MBTH) onto filter paper using polystyrene as polymeric support. The sensing scheme was based on the decreasing intensity of the maroon colour of the test strip when introduced into benzoic acid solution. The test strip was characte...

the catalytic oxidation of toluene to benzoic acid in the liquid phase has been studied in an un-stirred tank reactor. low concentration of acetic acid was added in order to increase the solubility of the catalyst in toluene. the dependence of the rate of reaction on the concentration of toluene catalyst and oxygen pressure was studied. it has been suggested that liquid phase oxidation of tolue...

The polarographic wave observed for acetonitrile solutions of benzoic acid is due to reduction of the acid proton: the apparent diffusion current constant for the wave increases with concentration of benzoic acid as expected for the reduction of the acidic proton of a slightly dissociated acid. No wave was observed for ethyl benzoate. The situation in respect to the electrochemical reduction of...

A new type of 3D MOF, namely [Eu(L)2NO3]n(HL ?= ?3,5-bis(triazol-1-yl)-benzoic acid), has been designed and synthesized. The unique crystal structure is derived from the combination ligand containing triazole moiety lanthanide Eu(?) ion. application ratio dual-signal improves accuracy for detecting amino acids. limit detection L-tryptophan in range 0–633 ??M 0.00424 ??M, reaching a ?M level. An...

Although a number of plant natural products are derived from benzoic acid, the biosynthesis of this structurally simple precursor is poorly understood. Hypericum calycinum cell cultures accumulate a benzoic acid-derived xanthone phytoalexin, hyperxanthone E, in response to elicitor treatment. Using a subtracted complementary DNA (cDNA) library and sequence information about conserved coenzyme A...

Although a number of plant natural products are derived from benzoic acid, the biosynthesis of this structurally simple precursor is poorly understood. Hypericum calycinum cell cultures accumulate a benzoic acid-derived xanthone phytoalexin, hyperxanthone E, in response to elicitor treatment. Using a subtracted complementary DNA (cDNA) library and sequence information about conserved coenzyme A...

The problem of the origin of the glycine available for hippuric acid synthesis after the administration of benzoic acid or its salts has been studied by many investigators with varying results. It should be borne in mind, in this connection, that all species of animals do not react similarly in response to the ingestion of benzoic acid. Thus the organisms of man (l), the rabbit (2), the goat (3...