Synonyms: 2-Butanol,4-(dimethylamino)-3-methyl-1,2-diphenyl-, propionate (ester), (?à)- (8CI); Benzeneethanol, a-[2-(dimethylamino)-1-methylethyl]-a-phenyl-, propanoate (ester),(R*,S*)- (9CI); Benzeneethanol, a-[2-(dimethylamino)-1-methylethyl]-a-phenyl-, propanoate (ester), (R*,S*)-(?à)-; (?à)-Propoxyphene; dl-Propoxyphene