2-Bromophenylalanine

3-Bromophenylalanine

4-Bromophenylalanine

2-Chlorophenylalanine

3-Chlorophenylalanine

4-Chlorophenylalanine

2,4-Dichlorophenylalanine

3,4-Dichlorophenylalanine

2-Cyanophenylalanine

3-Cyanophenylalanine

4-Cyanophenylalanine

2-Fluorophenylalanine

3-Fluorophenylalanine

4-Fluorophenylalanine

3,4-Difluorophenylalanine

3,5-Difluorophenylalanine

2,3,4,5,6-Pentafluorophenylalanine

Styrylalanine

2-Methylphenylalanine

3-Methylphenylalanine

4-Methylphenylalanine

2-Trifluoromethylphenylalanine

3-Trifluoromethylphenylalanine

4-Trifluoromethylphenylalanine

2-Nitrophenylalanine

3-Nitrophenylalanine

4-Nitrophenylalanine

4-Aminophenylalanine

4-Iodophenylalanine

3,3-Diphenylalanine

4,4’-Biphenylalanine

3-(1-Naphthyl)-alanine

3-(2-Naphthyl)-alanine

3-(2-Furyl)-alanine

3-(2-Pyridyl)-alanine

3-(3-Pyridyl)-alanine

3-(4-Pyridyl)-alanine

3-(2-Thienyl)-alanine

3-(3-Thienyl)-alanine

3-(3-Benzothienyl)-alanine

2-Amino-4-pentenoic acid (Allylglycine)

2-Amino-4-pentinoic acid (Propargylglycine)

2-Amino-4-phenyl-butyric acid (Homophenylalanine)

2-Amino-5-phenyl-pentanoic acid (Nva(5-phenyl)-OH)

1,2,3,4-Tetrahydroisoquinoline-3-carboxylic acid

7-Hydroxy-1,2,3,4-Tetrahydroisoquinoline-3-carboxylic acid

1,2,3,4-Tetrahydro-β-carbolin-3-carboxylic acid