(2R)-2-amino-3-(1H-indol-3-yl)propanoic Acid
(2R)-2-amino-3-hydroxypropanoic Acid
(2R)-2-amino-3-methylbutanoic Acid
(2R)-2-amino-4-methylsulfanylbutanoic Acid
(2R)-2-aminobutanedioic Acid
(2R)-2-aminopropanoic Acid
(2R)-pyrrolidine-2-carboxylic Acid
(2R,3S)-2-amino-3-hydroxybutanoic Acid
(2S)-2,6-diaminohexanoic Acid
(2S)-2-acetamido-3-(1H-indol-3-yl)propanoic Acid
(2S)-2-acetamidopentanedioic Acid
(2S)-2-amino-3-(1H-indol-3-yl)propanoic Acid