15991-27-2 ISONIPECOTIC ACID, 1-(2-(10,11-DIHYDRO-5-HYDROXY-5H-DIBENZO(a,d)CYCLOHEPTEN-5-YL Isonipecotic acid, 1-(2-(10,11-dihydro-5-hydroxy-5H-dibenzo(a,d)cyclohepten-5-yl)ethyl)-4-phenyl-, ethyl ester, hydrochloride