(S-(R*,S*))-beta-(2-(Dimethylamino)propyl)-alpha-ethyl-beta-phenylbenzeneethanol HCl 49570-64-1 Benzeneethanol, beta-(2-(dimethylamino)propyl)-alpha-ethyl-beta-phenyl-, hydrochloride, (S-(R*,S*))- beta-l-Methadol hydrochloride