4-乙酰基-3,5-二甲基-2-吡咯羧酸叔丁酯

2,4-二甲基-3-乙基吡咯

3-ethyl-4-methyl-1H-pyrrole-2-carbaldehyde

3-[5-(3-ethyl-5-carboxy-4-methyl-pyrrol-2-ylmethylene)-2,4-dimethyl-5H-pyrrol-3-yl]-propionic acid , hydrobromide

甲酸