1,3-苯并二噁茂-4-甲酸甲酯

2,3-二氧亚甲基苯甲酰氯

5-溴-2,3-二羟基苯甲酸

4,5-dibromo-2,3-dihydroxybenzoic acid

3-hydroxycyclohexa-3,5-diene-1,2-dione