1-(3,3-Diphenyl-2-propanonyl)-4-phenylisonipecotic acid ethyl ester hydrochloride 15991-51-2 ISONIPECOTIC ACID, 1-(3,3-DIPHENYL-2-OXOPROPYL)-4-PHENYL-, ETHYL ESTER, HYDROCHL Isonipecotic acid, 1-(3,3-diphenyl-2-oxopropyl)-4-phenyl-, ethyl ester, hydrochloride