3H-Pyrazolo(3,4-c)isoquinoline, 6,7,8,9-tetrahydro-1,3-dimethyl-, monohydrochloride 6,7,8,9-Tetrahydro-1,3-dimethyl-3H-pyrazolo(3,4-c)isoquinoline hydrochloride 99699-96-4