(S)-3-Methyl-2-((5-(trifluoromethyl)pyridin-2-yl)amino)butanoic acid
(2R,3S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(tert-butoxy)butanoic acid
(S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(methylselanyl)butanoic acid
(R)-2-((tert-Butoxycarbonyl)amino)-4-(methylthio)butanoic acid
(S)-2-Amino-4-((((2S,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl)thio)butanoic acid
(R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(methylsulfonyl)butanoic acid
4-(1H-Imidazol-1-yl)butanoic acid
4-(5-Amino-1,3-dioxoisoindolin-2-yl)butanoic acid
(2S,3R)-2-Amino-3-(phosphonooxy)butanoic acid
(2R,3S)-2-Amino-3-(benzyloxy)butanoic acid
4-(4-Oxo-3,4-dihydroquinazolin-2-yl)butanoic acid
(2S,3R)-3-(Benzyloxy)-2-(((benzyloxy)carbonyl)amino)butanoic acid
4-(4-oxo-2-Thioxothiazolidin-3-yl)butanoic acid
(S)-3-Methyl-2-(2-oxotetrahydropyrimidin-1(2H)-yl)butanoic acid
4-(5-((3aS,4S,6aR)-2-Oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamido)butanoic acid
4-Oxo-4-(pyridin-2-yl)butanoic acid
2-Amino-4-(methylselanyl)butanoic acid
(S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(tert-butoxy)butanoic acid
