4-((2,4-Dinitrophenyl)amino)butanoic acid
(S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(4-cyanophenyl)butanoic acid
4-((3-Nitropyridin-2-yl)amino)butanoic acid
(S)-2-(Aminomethyl)butanoic acid
4-(Piperidin-1-yl)butanoic acid hydrochloride
2-Amino-4-(methylthio)butanoic acid
4-(4-Isobutylphenyl)butanoic acid
(2S,3R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)(methyl)amino)-3-(tert-butoxy)butanoic acid
(R)-2-(((Benzyloxy)carbonyl)amino)butanoic acid
2-(4-Isobutylphenyl)butanoic acid
(R)-2-Amino-4-(ethylthio)butanoic acid
[Ir(ppy)2(4-([2,2'-bipyridin]-4-yl)butanoic acid)][PF6]
(2R,3S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(benzyloxy)butanoic acid
4-Oxo-4-(phenylamino)butanoic acid
4-(((2R,3R,4S,5S,6R)-3,4,5-Triacetoxy-6-(acetoxymethyl)tetrahydro-2H-pyran-2-yl)oxy)butanoic acid
4-(1H-Benzo[d][1,2,3]triazol-1-yl)butanoic acid
4-Amino-2-((tert-butoxycarbonyl)amino)butanoic acid
(S)-2-((S)-2-(((Benzyloxy)carbonyl)amino)-3-phenylpropanamido)-4-(methylthio)butanoic acid
(S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(1H-indol-3-yl)butanoic acid
(2S,3R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(trityloxy)butanoic acid
