title: The biotransformation of methadone in man: synthesis and identification of a major metabolite.
mesh_terms: D001711:Biotransformation; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D008691:Methadone / Q000378:metabolism* / Q000652:urine; D008722:Methods; D011758:Pyrroles / Q000138:chemical synthesis* / Q000652:urine*; D013053:Spectrophotometry
chemical_list: D011758:Pyrroles; D008691:Methadone