1(2H)-ISOQUINOLINONE, 3,4-DIHYDRO-6,7-DIMETHOXY-, HYDRAZONE, MONOHYDROCHLORIDE 1-Hydrazono-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline hydrochloride 3,4-Dihydro-6,7-dimethoxy-1(2H)-isoquinolinone hydrazone hydrochloride 78915-33-0