2,2-Diphenyl-2-methoxyacetic acid (1-ethyl-4-piperidyl)methyl ester hydrochloride 2898-69-3 ACETIC ACID, 2,2-DIPHENYL-2-METHOXY-, (1-ETHYL-4-PIPERIDYL)METHYL ESTER, HYDROCH Acetic acid, 2,2-diphenyl-2-methoxy-, (1-ethyl-4-piperidyl)methyl ester, hydrochloride