1H-Cyclopent[f]isoquinoline, 2,3,4,7,8,9-hexahydro-5,6-dimethoxy-3-(2-methylbutyl)-, hydrobromide 57612-12-1 Cyclopent[f]isoquinoline, 1,2,3,4-tetrahydro-5,6-dimethoxy-3-(2-methylbutyl)-, hydrobromide NSC302678