title: Studies related to the metabolism of anabolic steroids in the horse: the identification of some 16-oxygenated metabolites of 19-nortestosterone.
abstract: 1. The metabolism of 19-nor[4-14C]testosterone in a thoroughbred horse has been studied and neutral urinary metabolites obtained after enzyme hydrolysis have been investigated by g.l.c.-mass spectrometry. 2. 3-Hydroxyestran-17-one, 17 alpha- and 17 beta-nortestosterone, estrane-3,17-diol (two isomers), 3,16-dihydroxyestran-17-one (two isomers), 3,17-dihydroxyestran-16-one (two isomers) and estrane-3,16,17-triol were identified in the neutral urinary extracts.
mesh_terms: D000818:Animals; D006736:Horses / Q000378:metabolism*; D006801:Humans; D006868:Hydrolysis; D009277:Nandrolone / Q000097:blood / Q000378:metabolism* / Q000652:urine
chemical_list: D009277:Nandrolone