4-amino-5-methylthiophene-2-carboxylic acid,hydrochloride

4-氨基-5-甲基-2-噻吩羧酸

ethyl 5-methyl-4-nitrothiophene-2-carboxylate

2-methyl-3,5-dinitrothiophene

5-甲基-4-硝基噻吩-2-羧酸甲酯