nicotinic acid
nicotinic acid , noun
It is a cofactor in several enzymatic reactions, and is used to prevent a pellagra-like disease in dogs. [MI11]
(Chemistry) An organic acid (C6H5NO2), a carboxylated derivative of pyridine, obtained by the oxidation of nicotine; called also niacin and antipellagra vitamin, and vitamin B5. Chemically it is 3-pyridinecarboxylic acid. — [MI11]