- xanthine
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Any of a group of alkaloids, that include caffeine, theophylline, and theobromine as well as the parent compound, a precursor of uric acid found in many organs of the body.
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xanthine
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Xanthine — Général N … Wikipédia en Français
xanthine — [ gzɑ̃tin ] n. f. • 1890; du gr. xanthos « jaune » et ine ♦ Biochim. Base organique dérivée de la purine et qui donne sa couleur jaune à l urine. ● xanthine nom féminin Base purique entrant dans la composition des nucléotides et des acides… … Encyclopédie Universelle
Xanthine — Xan thine, n. Also Xanthin Xan thin . [Gr. xanqo s yellow.] (Physiol. Chem.) A type of purine obtainable as a white microcrystalline powder, {C5H4O2N4}, present in muscle tissue, in the liver, spleen, pancreas, and other organs, and also in urine … The Collaborative International Dictionary of English
xanthine — xanthine. См. ксантин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) … Молекулярная биология и генетика. Толковый словарь.
xanthine — [zan′thēn΄, zan′thin] n. [Fr: see XANTHO & IN1] 1. a white, crystalline, nitrogenous compound, C5H4N4O2, resembling uric acid: it is present in blood, urine, and certain plants 2. any of various derivatives of this compound … English World dictionary
Xanthine — Not to be confused with xanthene. Xanthine … Wikipedia
Xanthine — A substance found in caffeine, theobromine, and theophylline and encountered in tea, coffee, and the colas. Chemically, xanthine is a purine. There is a genetic disease of xanthine metabolism, xanthinuria, due to deficiency of an enzyme, xanthine … Medical dictionary
Xanthine — Strukturformel Allgemeines Name Xanthin Andere Namen 2,6 Dihydroxypurin 2,6(1H,3H) Purindion … Deutsch Wikipedia
xanthine — noun Etymology: International Scientific Vocabulary Date: 1857 a feebly basic compound C5H4N4O2 that occurs especially in animal or plant tissue, is derived from guanine and hypoxanthine, and yields uric acid on oxidation; also any of various… … New Collegiate Dictionary
xanthine — (gzan ti n ) s. f. Terme de chimie. Matière colorante de la garance. Xanthine azotée, oxyde xanthique, principe découvert dans quelques calculs urinaires de l homme, et qui paraît exister aussi en grande quantité dans le guano. ÉTYMOLOGIE… … Dictionnaire de la Langue Française d'Émile Littré
xanthine — n. a nitrogenous breakdown product of the purines adenosine and guanine. Xanthine is an intermediate product of the breakdown of nucleic acids to uric acid … The new mediacal dictionary
