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nicotinic acid

   Also found in: Dictionary/thesaurus, Medical, Legal, Wikipedia, Hutchinson 0.02 sec.
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
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; 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
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niacin

 or nicotinic acid or vitamin B3

Water-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.


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In this section we highlight the contribution of direct-space structure solution methods to a number of systematic structural studies, including a long-standing investigation of a family of sulfonylamino compounds entirely from powder diffraction data, the study of atypical crystal packing in a group of nicotinic acid derivatives and report the first example of powder diffraction being used in the structure solution of an organic cocrystal.
05 Saline Monocrotaline 5 50 Saline Nicotinic acid 200 2,000 Saline Oligomycin 0.
niacin (vitamin B3) or nicotinic acid, an important member of the vitamin B complex, aids the metabolic process for growth in every cell.
 
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