4-Piperidinol, 1-butyl-4-cyclohexyl-, butyrate, hydrochloride 63916-27-8 Butyric acid, 4-(1-butyl-4-cyclohexyl)piperidyl ester, hydrochloride NU-1188 Piperidine, 1-butyl-4-butyryloxy-4-cyclohexyl-, hydrochloride