2-(3,4-二甲氧基苯基)-5,7,8-三甲氧基-4H-1-苯并吡喃-4-酮

1-(2-hydroxy-3,4,6-trimethoxyphenyl)-3-(3,4-dimethoxyphenyl)-1,3-propanedione

2'-(3,4-dimethoxybenzoyloxy)-3',4',6'-trimethoxyacetophenone

1-(3,6-二羟基-2,4-二甲氧基苯基)-乙酮

3,4-二甲氧基苯甲酸酐