(+)-Methadone (S)-6-(Dimethylamino)-4,4-diphenyl-3-heptanone 3-14-00-00279 (Beilstein Handbook Reference) 3-HEPTANONE, 6-(DIMETHYLAMINO)-4,4-DIPHENYL-, (S)- 5653-80-5 6S-Methadone BRN 3213667 Dextromethadone L-(+)-Methadone S-(+)-Methadone d-6-(Dimethylamino)-4,4-diphenyl-3-heptanone d-Methadone