N-tert-butyloxycarbonyl-L-valyl-L-α-hydroxyglycine

N-(tert-butyloxycarbonyl)-L-valyl-DL-α-(ethylthio)glycine

(5R,8S,11R,14S,16aS)-14-Benzyl-8-isopropyl-11-methyl-4,7,10,13,16-pentaoxo-hexadecahydro-3a,6,9,12,15-pentaaza-cyclopentacyclopentadecene-5-carbonitrile

cyclo[Val-D-Gly(SEt)-Pro-Phe-D-Ala]

(S)-2-[(S)-2-Benzyloxy-2-((S)-2-tert-butoxycarbonylamino-3-methyl-butyrylamino)-acetylamino]-3-methyl-butyric acid methyl ester