2-(2-乙氧基-2-氧代乙基)-1,4-二甲基-1H-吡咯-3-羧酸

5-(4-氯苯甲酰基)-2-(2-乙氧基-2-氧代乙基)-1,4-二甲基吡咯-3-羧酸乙酯

2-[1,4-dimethyl-5-(pyridine-3-carbonyl)pyrrol-2-yl]acetic acid

2-[1,4-dimethyl-5-(pyridine-2-carbonyl)pyrrol-2-yl]acetic acid