24465-45-0 4-Piperidinecarboxylic acid, 4-phenyl-, ethyl ester, hydrochloride 77-17-8 EINECS 246-276-8 Ethyl 4-phenylpiperidine-4-carboxylate hydrochloride ISONIPECOTIC ACID, 4-PHENYL-, ETHYL ESTER, HYDROCHLORIDE Normeperidine hydrochloride Normepiridine hydrochloride