(2S)-[N-(tert-butoxycarbonyl)amino]-3-pentenoic acid

(S)-2-[(benzyloxycarbonyl)amino]-4-(methylsulfinyl)butanoic acid methyl ester

2(S)-benzyl N-tert-butoxycarbonyl-4-(methylsulfinyl)butanoate

benzyl ((1S,2S)-2-hydroxy-1-(4-methyl-2,6,7-trioxabicyclo[2.2.2]octan-1-yl)-3-(trimethylsilyl)propyl)carbamate

3-Butenoic acid, 2-(acetylamino)-, (S)-