龙胆酸甲酯;二羟基苯甲酸甲酯;5-羟基水杨酸甲酯;

methyl gentisate;2,5-dihydroxy-benzoic acid methyl ester;Methyl 2,5-Dihydroxybenzoate;methyl 6-(trifluoromethylsulfonyloxy)coumarin-5-carboxylate;2,5-Dihydroxybenzoic Acid Methyl Ester;