2,5-二甲氧基四氢呋喃

methyl 4-amino-2-methyl-5-methylsulfonylbenzoate

4-氯-2-甲基苯甲酸

2-chloro-4-methyl-5-carboxybenzenesulfinic acid

2-methyl-4-chloro-5-methyl-sulfonylbenzoic acid