(5E)-5-(1,2-二氢-5H-四唑-5-亚基)-2-(2-丙氧基苯基)-4(5H)-嘧啶酮

Ethyl 3-amino-2-cyanoacrylate

Ethyl (2E)-2-cyano-3-[(3,5-difluorophenyl)amino]acrylate

5-氨基-1-（4-吡啶基）-1H-吡唑-4-羧酸乙酯

ethyl 5-imino-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate