648412-51-5
methyl 4-amino-5-cyanothiophene-2-carboxylate
→
~37%
648411-35-2
3-氨基-1H-噻吩[3,2-C]吡唑-5-羧酸甲酯
648412-49-1
methyl 5-cyano-4-nitrothiophene-2-carboxylate
~36%