1-Benzyl-4-phenyl-4-piperidinol propionate (ester) hydrochloride 1-Benzyl-4-phenyl-4-piperidinyl propionate hydrochloride 4-Piperidinol, 1-benzyl-4-phenyl-, propionate, hydrochloride 63916-24-5 NU-1304 Propionic acid, 4-(1-benzyl-4-phenyl)piperidyl ester, hydrochloride