2-(4-Carboxy-butyrylamino)-5,6-dihydro-4 H -cyclopenta[ b ]thiophene-3-carboxylic acid ethyl ester

3-(4-Oxo-4,5-dihydro-thiazol-2-ylamino)-propionic acid

(Methanesulfonyl-phenethyl-amino)-acetic acid

(4-Methoxy-benzenesulfonylamino)-acetic acid

5-(2-氯苯基)-3-吡唑甲酸, 5-(2-Chloro-phenyl)-2 H -pyrazole-3-carboxylic acid

Thieno[2,3- b ]quinoline-2-carboxylic acid

2-Methyl-3-oxo-2,3-dihydro-1 H -isoindole-4-carboxylic acid

1-(2-Methoxy-phenyl)-5-oxo-pyrrolidine-3-carboxylic acid

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

4-(4-Methyl-piperidin-1-yl)-benzoic acid

5-tert-Butyl-4-diethylaminomethyl-2-methyl-furan-3-carboxylic acid