1,2-bis(4-hydroxy-3-methoxyphenyl)ethane-1,2-dione

3-iodo-4,5-dimethoxybenzoic acid

3,4-二甲氧基-2-硝基苯甲醛

2-溴-3,4-二甲氧基苯甲醛

methyl 4-formyl-2-methoxybenzoate