1-(4-Phenyl-4-piperidyl)propan-1-one hydrochloride 1-Propanone, 1-(4-phenyl-4-piperidinyl)-, hydrochloride 15847-64-0 4-Phenyl-4-propionylpiperidine hydrochloride 4-Piperidinecarbocylic acid, 4-phenyl-, ethyl ester, hydrochloride EINECS 239-959-7 Ethyl norpethidinate hydrochloride