5-氨基噻吩-2-甲酸甲酯

cyclohexyl 5-nitrothiophene-2-carboxylate

5-(乙酰氨基)噻吩-2-羧酸

5-硝基-2-噻吩甲酸乙酯

5-nitrothiophene-2-carboxamide