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

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

(1,3-Dihydro-isoindol-2-yl)-acetic acid

5-Methyl-7-trifluoromethyl-4,5,6,7-tetrahydro-pyrazolo[1,5- a ]pyrimidine-3-carboxylic acid

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

1-Methyl-5-oxo-pyrrolidine-3-carboxylic acid

1-甲基-5-氧代吡咯烷-3-羧酸

3-(1-Allyl-5-oxo-2-thioxo-imidazolidin-4-yl)-propionic acid

4-[(1,1-Dioxo-tetrahydrothiophen-3-ylamino)-methyl]-benzoic acid

(4-Benzyl-1-oxo-1 H -phthalazin-2-yl)-acetic acid

3-Amino-4,6-dimethyl-thieno[2,3- b ]pyridine-2-carboxylic acid

5-Amino-2-piperidin-1-yl-benzoic acid