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

1-(4-Methoxy-benzenesulfonyl)-piperidine-2-carboxylic acid

3-(5-Thiophen-2-yl-furan-2-yl)-propionic acid

2-Methoxy-5-(morpholine-4-sulfonyl)-benzoic acid

3-Amino-3-[4-(3-methyl-butoxy)-phenyl]-propionic acid

9-Trifluoromethyl-5,6,7,8-tetrahydro-pyrazolo[5,1- b ]quinazoline-2-carboxylic acid

3-Pyrrol-1-yl-benzoic acid

3-(1H-吡咯-1-基)苯甲酸

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

1-(4-Ethoxy-benzoyl)-pyrrolidine-2-carboxylic acid

2-Methyl-5-morpholin-4-ylmethyl-furan-3-carboxylic acid

(2,5-Dioxo-pyrrolidin-1-yl)-acetic acid