(R)-2-(2-((tert-Butoxycarbonyl)amino)-2-methylpropanamido)-3-(1H-indol-3-yl)propanoic acid

(S)-2-((S)-2-(((Benzyloxy)carbonyl)amino)-3-phenylpropanamido)-4-(methylthio)butanoic acid

(S)-2-(2-(((Benzyloxy)carbonyl)amino)-3-phenylpropanamido)acetic acid

Z-Phe-Ala-OH

(S)-6-Acetamido-2-(2-((S)-2-acetamido-4-methylpentanamido)acetamido)-N-(4-methyl-2-oxo-2H-chromen-7-yl)hexanamide

(S)-1-((S)-2-(((Benzyloxy)carbonyl)amino)propanoyl)pyrrolidine-2-carboxylic acid

Cbz-Ala-Ala-Ome

(S)-2-((S)-3-Amino-3-carboxypropanamido)succinic acid

(S)-2-(2-(2-Aminoacetamido)acetamido)-4-methylpentanoic acid

(6S,9R)-6-(4-Hydroxybenzyl)-2,2,9-trimethyl-4,7,10-trioxo-3-oxa-5,8,11-triazatridecan-13-oic acid