22288-79-5
3-(乙酰基氨基)-2-噻吩羧酸甲酯
→
~35%
80615-53-8
methyl 3-acetamido-4-nitrothiophene-2-carboxylate
+
80615-54-9
methyl 3-acetamido-5-nitrothiophene-2-carboxylate