Abstract
Methandrostenolone and the fully reduced metabolites 17 alpha-methyl-5 alpha-androstane-3 beta, 17 beta-diol and 17 alpha-methyl-5 beta-androstane-3 alpha, 17 beta-diol, the partially reduced and hydroxylated metabolites 16 alpha, 17 beta-dihydroxy-17 alpha-methyl-5 beta-androst-1-en-3-one and 16 beta, 17 beta-dihydroxy-17 alpha-methyl-5 beta-androst-1-en-3-one, the monohydroxylated metabolites 6 beta, 17 beta-dihydroxy-17 alpha-methyl-1,4-androstadien-3-one and 16 beta, 17 beta-dihydroxy-17 alpha-methyl-1,4-androstadien-3-one, and the dihydroxylated metabolite 6 beta, 16 beta, 17 beta-trihydroxy-17 beta-trihydroxy-17 alpha-methyl-1,4-androstadien-3-one have been isolated and identified in the urine of rabbits orally dosed with methandrostenolone. C-16 Hydroxylated and dihydroxylated metabolites have not been previously reported from methandrostenolone. No evidence for epimerization at the C-17 position was observed in the rabbit.
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