nicotinic acid ic`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]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • C6H5NO2 — niacin iacin 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… …   The Collaborative International Dictionary of English

  • C6H5NO2 — The molecular formula C6H5NO2 may refer to:* Isonicotinic acid * Niacin * Nitrobenzene …   Wikipedia

  • C6H5NO2 —      Cette page répertorie différents isomères, c’est à dire les molécules qui partagent la même formule brute. C6H5 …   Wikipédia en Français

  • C6H5NO2 — Nitrobenzene Ni tro*ben zene (? or ?), n. [Nitro + benzene.] (Chem.) A yellow aromatic liquid ({C6H5.NO2}), produced by the action of nitric acid on benzene, and called from its odor {imitation oil of bitter almonds}, or {essence of mirbane}. It… …   The Collaborative International Dictionary of English

  • C6H5NO2 — nitro i tro pref. 1. A combining form or an adjective denoting the presence of niter. [1913 Webster] 2. (Chem.) A combining form (used also adjectively) designating certain compounds of nitrogen or of its acids; as nitrohydrochloric,… …   The Collaborative International Dictionary of English

  • НИТРОБЕНЗОЛ — C6H5NO2 зеленовато жёлтая маслянистая жидкость с сильным запахом миндаля; tкип 211°С. Исходное в во для получения анилина, бензндина и др. органич. азотсодержащих соединений, растворитель, компонент полировальных средств для металлов …   Большой энциклопедический политехнический словарь

  • Nitrobenzene — Other names …   Wikipedia

  • Niacin — IUPAC name …   Wikipedia

  • Isonicotinic acid — Isonicotinic acid[1] …   Wikipedia

  • 59-67-6 — Vitamine B3 Pour les articles homonymes, voir B3 et PP. acide nicotinique …   Wikipédia en Français

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