5-氨基-4-咪唑甲酰胺

5-氨基-4-噻唑甲酰胺

5-amino-1-benzhydrylimidazole-4-carboxamide

N2-乙酰基-3-次氮基丙氨酰胺

ethyl N-(2-amino-1-cyano-2-oxoethyl)ethanimidate