(4-Nitro-pyrazol-1-yl)-acetic acid

3-(3-Chloro-phenyl)-3-(9 H -fluoren-9-ylmethoxycarbonylamino)-propionic acid

3-(3-氯-苯基)-3-(9H-芴-9-基甲氧基羰基氨基)-丙酸

1-Methanesulfonyl-2,3-dihydro-1 H -indole-5-carboxylic acid

1-(甲基磺酰基)吲哚啉-5-羧酸

(1-Oxo-1 H -phthalazin-2-yl)-acetic acid

2-Pyrrolidin-1-yl-propionic acid

2-(1-吡咯烷基)丙酸

3-(4-Methyl-piperidin-1-yl)-propionic acid

3-(4-甲基哌啶-1-基)丙酸

3 -(4 -乙基哌嗪-1-基)-丙酸, 3-(4-Ethyl-piperazin-1-yl)-propionic acid

3-(4-Thioxo-[1,3,5]triazinan-1-yl)-propionic acid

2-(3,4-Dihydro-2 H -quinoline-1-carbonyl)-cyclohexanecarboxylic acid

2-(4-Dimethylamino-2-hydroxy-benzoyl)-benzoic acid