(6,7-dimethoxyisoquinolin-1-yl)(3,4-dimethoxyphenyl)methanone 522-57-6 InChI=1/C20H19NO5/c1-23-15-6-5-13(10-16(15)24-2)20(22)19-14-11-18(26-4)17(25-3)9-12(14)7-8-21-19/h5-11H,1-4H methanone, (6,7-dimethoxy-1-isoquinolinyl)(3,4-dimethoxyphenyl)-