title: Characterization of metabolites of steroid contraceptives by gas chromatography and mass spectrometry.
mesh_terms: D000328:Adult; D000480:Alkynes / Q000138:chemical synthesis / Q000652:urine; D000731:Androstanes / Q000138:chemical synthesis / Q000652:urine; D055598:Chemical Phenomena; D002621:Chemistry; D002845:Chromatography; D002849:Chromatography, Gas; D004116:Dimethisterone / Q000378:metabolism* / Q000652:urine; D004962:Estranes / Q000138:chemical synthesis / Q000652:urine; D005260:Female; D005966:Glucuronidase; D006801:Humans; D006914:Hydroxysteroids / Q000138:chemical synthesis / Q000652:urine; D013058:Mass Spectrometry; D009640:Norethindrone / Q000378:metabolism* / Q000652:urine; D013429:Sulfatases
chemical_list: D000480:Alkynes; D000731:Androstanes; D004962:Estranes; D006914:Hydroxysteroids; D013429:Sulfatases; D005966:Glucuronidase; D004116:Dimethisterone; D009640:Norethindrone