xanthaline

papaveraldine

6,7-dimethoxy-1-veratroylisoquinoline

(6,7-dimethoxy-1-isoquinolyl) (3,4-dimethoxyphenyl) ketone

(6,7-Dimethoxyisoquinolin-1-yl)(3,4-dimethoxyphenyl) ketone

(6,7-dimethoxy-1-isoquinolyl)-(3,4-dimethoxyphenyl)methanone