5-(3,4-Dimethoxy-phenyl)-2 H -pyrazole-3-carboxylic acid

2-(4,5-Dihydro-1 H -imidazol-2-ylamino)-propionic acid

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

7-Chloro-4-methyl-2-oxo-3,4-dihydro-2 H -pyrido[1,2- a ]pyrimidine-4-carboxylic acid

2-Morpholin-4-yl-propionic acid

1-(4-Methyl-benzoyl)-piperidine-4-carboxylic acid

1-(3,4-Dimethoxy-benzoyl)-piperidine-4-carboxylic acid

3-(4-Fluoro-phenyl)-2-phenyl-propionic acid

(1-Methyl-1 H -benzoimidazol-2-ylsulfanyl)-acetic acid

1-(4-Chloro-benzenesulfonyl)-pyrrolidine-2-carboxylic acid