4-羟基间苯二甲酸

2-(苄氧基)-5-甲酰基苯甲酸苄酯

benzyl 2-hydroxy-5-formylbenzoate

5-(2,2-dicyanoethenyl)-2-hydroxybenzoic acid

methyl 5-formyl-2-(trifluoromethylsulfonyloxy)benzoate