1-甲基-4-硝基吡咯-2-羧酸

1-甲基-4-硝基-1H-吡咯-2-甲酸乙酯

Benzyl 4-[[(4-Amino-1-methylpyrrol-2-yl)carbonyl]amino]-1-methylpyrrole-2-carboxylate

4-formamido-1-methylpyrrole-2-carboxylic acid

benzyl 4-[[[4-[[(tert-butyloxy)carbonyl]amino]-1-methyl-pyrrol-2-yl]carbonyl]amino]-1-methyl-pyrrole-2-carboxylate