5,6-dimethoxy-1,2,3,4-tetrahydroisoquinolin-2-ium,chloride

7,8-dimethoxy-2-(3,4-dimethoxyphenethyl)-1,2,3,4-tetrahydroisoquinolin-3-one

N-(2,3-dimethoxybenzyl)-2-(phenylthio)ethan-1-amine

ethyl 4-(2,3-dimethoxyphenyl)butanoate

2,2',3,3'-tetramethoxybenzophenone