1,2,3,4-Tetrahydro-2-piperidinomethyl-1-naphthol hydrochloride 1-Naphthol, 1,2,3,4-tetrahydro-2-(piperidinomethyl)-, hydrochloride 2-Piperidinomethyl-1-hydroxy-1,2,3,4-tetrahydronaphthalene hydrochloride NU-786 QL5424000