Levopropoxyphene napsylate;levopropoxyphene napsilate; Levopropoxyphene Napsylate Anhydrous;(-)-1-benzyl-3-dimethylamino-2-methyl-1-phenylpropyl propionate naphthalene-2-sulphonate; 

Levopropoxyphene hydrochloride;Benzeneethanol, a-[2-(dimethylamino)-1-methylethyl]-a-phenyl-, propanoate (ester),hydrochloride, [R-(R*,S*)]- (9CI);2-Butanol,4-(dimethylamino)-3-methyl-1,2-diphenyl-, propionate, hydrochloride, (-)-(8CI); l-Propoxyphene hydrochloride; a-l-Propoxyphene hydrochloride; 

2-naphthalenesulfonicacid,compd.with(-)-alpha-4-(dimethylamino)-3-methyl-1;2-butanol,4-(dimethylamino)-3-methyl-1,2-diphenyl;levopropoxyphenenapsylate;novrad;levopropoxyphene napsylate (300 mg);LEVOPROPOXYPHENE NAPSYLATE (300 MG);,2-diphenyl-2-butanolpropionate(1:1),monohydrate;levopropoxyphene2-naphthalenesulfonate;