4-氨基-1-甲基-1H-咪唑-2-羧酸乙酯

1-甲基-4-硝基咪唑-2-羧酸乙酯

4-amino-N-(2-cyanoethyl)-1-methylpyrrole-2-carboxamide

N-(2-cyanoethyl)-1-methyl-4-nitropyrrole-2-carboxamide

1-methyl-4-(1-methyl-4-nitropyrrole-2-carboxamido)imidazole-2-carboxylic acid