| oxythiamin | A molecule similar to that of thiamin but with a hydroxyl group replacing the amino group on the pyrimidine ring; a thiamin antagonist capable of inducing symptoms of thiamin deficiency on administration; increases thiamin excretion. (05 Mar 2000) |
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| oxythiamine | <chemical> Thiamine antagonist, antimetabolite. Pharmacological action: antimetabolites. Chemical name: Thiazolium, 3-((1,4-dihydro-2-methyl-4-oxo-5-pyrimidinyl)methyl)-5-(2-hydroxyethyl)-4-methyl- (12 Dec 1998) |