2-[(5-ethyl-8-oxo-[1,3]dioxolo[4,5-g]quinoline-7-carbonyl)amino]acetic acid

3,4-二氯-2,5-二氢-2,5-二氧代-1H-吡咯-1-乙酸

2-羧基甲基氨基-4-氯苯甲酸

2-(乙氧基羰基氨基)乙酸乙酯

2-[(2-nitrophenyl)methylamino]acetic acid