6-溴-2,2-二甲基-2H-苯并吡喃-5,8-二酮

5-羟基苯并呋喃-2-羧酸

2-formyl-1,2,3,4-tetrahydro-5,8-dimethoxyisoquinoline

2-(2',5'-dimethoxyphenyl)-1,3-dioxane

(2,4-dimethoxyphenyl)methylene diacetate