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niacin 音标拼音: [n'ɑɪəsən] [n'ɑɪəsɪn] n. nicotinic acid的商品名 nicotinic acid的商品名 niacin n 1: a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract [ synonym: { niacin}, { nicotinic acid}] niacin \ niacin\ n. A B vitamin ( vitamin B5) essential for the normal function of the nervous system and the gastrointestinal tract. Called also { nicotinic acid} and { antipellagra vitamin}. Chemical formula { C6H5NO2}, chemically it is 3- pyridinecarboxylic acid. Syn: nicotinic acid. [ WordNet 1. 5]
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. [ 1913 Webster PJC] 31 Moby Thesaurus words for " niacin": adermin, aneurin, antiberi- beri factor, ascorbic acid, axerophthol, biotin, carotene, cholecalciferol, choline, cobalamin, cryptoxanthin, cyanocobalamin, ergocalciferol, folic acid, hepatoflavin, inositol, lactoflavin, menadione, naphthoquinone, nicotinic acid, ovoflavin, pyridoxine, tocopherol, vitamin, vitamin B, vitamin Bc, vitamin D, vitamin G, vitamin H, vitamin K, vitamin M
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