(S)-(+)-Methadone; (+)-(6S)-Methadone (+)-(S)-Methadone (+)-Methadone (6S)-Methadone (S)-(+)-Methadone L-(+)-Methadone L-Methadone d-Methadone Esmethadone Methadone, (+)- REL 1017 S-Methadone,(S)-6-(dimethylamino)-4,4-diphenylheptan-3-one; (6S)-6-(Dimethylamino)-4,4-diphenyl-3-heptanone,Methadone