1-(Thiophene-2-carbonyl)-piperidine-4-carboxylic acid

1-(4-Hydroxy-phenyl)-5-oxo-pyrrolidine-3-carboxylic acid

(2-Isopropyl-benzoimidazol-1-yl)-acetic acid

5-Oxo-5-pyrrolidin-1-yl-pentanoic acid

1-Isopropyl-1H-pyrazole-4-carboxylic acid

1-异丙基吡唑-4-甲酸

3-(2-Oxo-pyrrolidin-1-yl)-propionic acid

2-Methyl-1-phenyl-1 H -benzoimidazole-5-carboxylic acid

2-甲基-1-苯基-1H-苯并咪唑-5-羧酸

3-[(4-Methoxyphenyl)sulfonamido]propionic acid

3-Phenyl-2-(thiophene-2-sulfonamido)propionic acid

1-Phenyl-2,3,4,9-tetrahydro-1 H -$b-carboline-3-carboxylic acid

(1,4,5,6-Tetrahydro-pyrimidin-2-ylsulfanyl)-acetic acid