(-)-Methadone (6R)-6-(Dimethylamino)-4,4-diphenylheptan-3-one (6R)-Methadone (R)-6-(Dimethylamino)-4,4-diphenylheptan-3-one (R)-Methadone D-(-)-Methadone l-Methadone l-Polamivet Levomethadone Levothyl Polamivet R-(-)-Methadone,(6R)-6-(Dimethylamino)-4,4-diphenyl-3-heptanone,Methadone