diethyl 3-trifluoromethzyl-5-methyl-pyrrole-2,4-dicarboxylate

2-ethyl-3,5-dimethyl-pyrrole

1-(5-bromo-2,4-dimethyl-pyrrol-3-yl)-ethanone

2,3,5-三甲基-4-吡咯羧酸乙酯

2,4-二甲基吡咯-3,5-二羧酸二乙酯