5-(乙氧基羰基)-4-甲基-1H-吡咯-3-羧酸

4-(乙氧基羰基)-3-甲基-1H-吡咯-2-羧酸

N-Ethyl-4-{[5-(methoxycarbamoyl)-2-methylphenyl]amino}-5-methylpy rrolo[2,1-f][1,2,4]triazine-6-carboxamide

diethyl 5-iodo-3-methyl-1H-pyrrole-2,4-dicarboxylate