1-(2-Hydroxyethyl)-4-phenylisonipecotic acid ethyl ester benzilate (ester) hydrochloride 14170-92-4 4-Piperidinecarboxylic acid, 1-(2-hydroxyethyl)-4-phenyl-, ethyl ester, benzilate HCl ISONIPECOTIC ACID, 1-(2-HYDROXYETHYL)-4-PHENYL-, ETHYL ESTER, BENZILATE (ester), Isonipecotic acid, 1-(2-hydroxyethyl)-4-phenyl-, ethyl ester, benzilate (ester), hydrochloride