1(2H)-NAPHTHALENONE, 3,4-DIHYDRO-6,7-DIMETHOXY-2-(PIPERIDINOMETHYL)-, HYDROCHLOR 1(2H)-Naphthalenone, 3,4-dihydro-6,7-dimethoxy-2-(piperidinomethyl)-, hydrochloride 3,4-Dihydro-6,7-dimethoxy-2-(piperidinomethyl)-1(2H)-naphthalenone hydrochloride 93901-89-4 N-688