Synonyms: 4-Piperidinol,1,2,5-trimethyl-4-phenyl-, propanoate (ester), hydrochloride (9CI);4-Piperidinol, 1,2,5-trimethyl-4-phenyl-, propionate (ester), hydrochloride(8CI); Propionic acid, 1,2,5-trimethyl-4-phenyl-4-piperidyl ester,hydrochloride (6CI); 4-Piperidinol, 1,2,5-trimethyl-4-phenyl-, propionate,hydrochloride (6CI); 1,2,5-Trimethyl-4-phenyl-4-(propionoxy)piperidinehydrochloride; 1,2,5-Trimethyl-4-phenyl-4-piperidol propionate hydrochloride;Dimethylmeperidine; Promedol hydrochloride; Trimeperidine hydrochloride