(2,5-Dioxo-1-phenyl-imidazolidin-4-yl)-acetic 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

(6-Amino-benzothiazol-2-ylsulfanyl)-acetic acid

4-Methoxy-naphthalene-1-carboxylic acid

4-甲氧基-1-萘甲酸

5- p -Tolyl-1 H -pyrrole-2-carboxylic acid

[(4-Methyl-furazan-3-carbonyl)-amino]-acetic acid

5-(Pyridin-2-ylcarbamoyl)-3 H -imidazole-4-carboxylic acid

(4-Thioxo-[1,3,5]triazinan-1-yl)-acetic acid

1-(Toluene-4-sulfonyl)-piperidine-2-carboxylic acid

1-Benzenesulfonyl-pyrrolidine-2-carboxylic acid