(R-(R*,S*))-alpha-(2-(Dimethylamino)-1-methylethyl)-alpha-phenylphenethyl propionate hydrochloride 1596-70-9 2-Butanol, 4-(dimethylamino)-3-methyl-1,2-diphenyl-, propionate (ester), hydrochloride, (L)- EINECS 216-484-3 L-Propoxyphene hydrochloride Levopropoxyphene hydrochloride