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nicotinic acid |
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nicotinic acid: see coenzyme biotin, is a member of the B complex; it was first isolated in 1935 from dried egg yolk, and its structure was established in 1942. Biotin is usually found attached to a lysine residue in certain enzymes, where it participates in reactions involving the transfer of carboxyl ..... Click the link for more information. ; vitamin vitamin, group of organic substances that are required in the diet of humans and animals for normal growth, maintenance of life, and normal reproduction. Vitamins act as catalysts; very often either the vitamins themselves are coenzymes , or they form integral parts ..... Click the link for more information. . niacinor nicotinic acid or vitamin B3Water-soluble vitamin of the vitamin B complex, essential to growth and health in animals, including humans. It is found in the body only in combined form as a coenzyme, nicotinamide adenine dinucleotide (NAD), which is involved in the metabolism of carbohydrates and the oxidation of sugar derivatives and other substances. One of the most stable vitamins, it survives most cooking and most preserving processes. It is widely found in dietary sources, especially lean meat. Deficiency causes pellagra. It is used as a drug to reduce high cholesterol levels in the blood. nicotinic acid [¦nik·ə¦tin·ik ′as·əd] (biochemistry) C6H5NO2A component of the vitamin B complex; a white, water-soluble powder stable to heat, acid, and alkali; used for the treatment of pellagra. Also known as niacin. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Chlorpyrifos, parathion, and their oxons bind to and desensitize a nicotinic acetylcholine receptor: relevance to their toxicities. The combination of fibrates or nicotinic acid with statins has been identified as a potential risk factor (2); however, recent recommendations support consideration of this combination in patients at high risk for developing coronary events who have elevated triglycerides and low HDL-C. Key words: chlorothalonil; cocrystals; crystal engineering; direct-space methods; hydrogen bonding; Monte Carlo; nicotinic acid; polymorphism; powder diffraction; preferred orientation; structure solution; sulfonamide. |
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