1-(2-Anilinoethyl)-4-phenylisonipecotic acid ethyl ester ethanesulfonate Ethyl 4-phenyl-1-(2-(phenylamino)ethyl)piperidine-4-carboxylate ethanesulfonate Isonipecotic acid, 1-(2-anilinoethyl)-4-phenyl-, ethyl ester, ethanesulfonate (salt) NS5265000 WIN 13,797-3