1-Isopropyl-4-phenyl-4-propionoxypiperidine hydrochloride 101866-68-6 4-Piperidinol, 1-isopropyl-4-phenyl-, propionate, hydrochloride NU-896 Propionic acid, 1-isopropyl-4-phenyl-4-piperidyl ester, hydrochloride