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A pyridinecarboxylic acid is any member of a group of organic compounds which are monocarboxylic derivatives of pyridine. Pyridinecarboxylic acid comes in three isomers: Picolinic acid (2-pyridinecarboxylic acid) Nicotinic acid (3-pyridinecarboxylic acid), also known as Niacin; Isonicotinic acid (4-pyridinecarboxylic acid)
Picolinic acid is an organic compound with the formula NC 5 H 4 CO 2 H. It is a derivative of pyridine with a carboxylic acid (COOH) substituent at the 2-position. It is an isomer of nicotinic acid and isonicotinic acid , which have the carboxyl side chain at the 3- and 4-positions, respectively.
Isonicotinic acid or pyridine-4-carboxylic acid is an organic compound with the formula C 5 H 4 N(CO 2 H). It is a derivative of pyridine with a carboxylic acid substituent at the 4-position. It is an isomer of picolinic acid and nicotinic acid, which have the carboxyl group at the 2- and 3-position respectively compared to the 4-position for ...
Pyridinedicarboxylic acid is a group of organic compounds which are dicarboxylic derivatives of pyridine. Pyridinedicarboxylic acid comes in several isomers: Quinolinic acid (2,3-pyridinedicarboxylic acid) Lutidinic acid (2,4-pyridinedicarboxylic acid) Isocinchomeronic acid (2,5-pyridinedicarboxylic acid) Dipicolinic acid (2,6 ...
Modern variations on the Dakin–West reaction permit many enolizable carboxylic acids – not merely amino acids – to be converted to their corresponding methyl ketones. For example, β-aryl carboxylic acids can be efficiently converted to β-aryl ketones by treatment of an acetic anhydride solution of the acid with catalytic N-methylimidazole.
2-Acetylpyridine is an organic compound with the formula CH 3 COC 5 H 4 N. It is a viscous colorless liquid that is widely used as a flavoring substance. It is found in malt and produced by the Maillard reaction and by nixtamalization. It contributes to the flavor of corn tortillas, popcorn, and beer. [3]
D-Glucosamine is made naturally in the form of glucosamine-6-phosphate, and is the biochemical precursor of all nitrogen-containing sugars. [1] To be specific, glucosamine-6-phosphate is synthesized from fructose 6-phosphate and glutamine [ 2 ] as the first step of the hexosamine biosynthesis pathway. [ 3 ]
ADA has been used in protein-free media for chicken embryo fibroblasts, as a chelating agent for H +, Ca 2+, and Mg 2+, and for isoelectric focusing in immobilized pH gradients. Its effects on dog kidney Na + /K +-ATPase and rat brain GABA receptors have also been studied. ADA does, however, alter coloring in bicinchoninic acid assays. [1]