The Collaborative International Dictionary
vitamin B5
nicotinic acid \nic`o*tin"ic ac"id\, n. (Chem.) 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.
Note: It is a cofactor in several enzymatic reactions, and is
used to prevent a pellagra-like disease in dogs.
--[MI11]
Syn: 3-pyridinecarboxylic acid, niacin, antipellagra vitamin.
vitamin B5
vitamin B5 \vitamin B5\ n. See nicotinic acid.
Syn: nicotinic acid.
Wiktionary
vitamin b5
n. pantothenic acid