methyl 2-ethoxy-7-hydroxy-1,3-benzodioxole-5-carboxylate

3,4-二羟基-5-甲氧基苯甲酸甲酯

甲基 7-甲氧基苯并[d][1,3]二氧代-5-羧酸

methyl 7-methoxy-6-nitro-1,3-benzodioxole-5-carboxylate

methyl 6-bromo-7-hydroxy-2,2-diphenylbenzo[d][1,3]dioxole-5-carboxylate