3-(N-benzyloxycarbonyl-L-leucyl)-1,3-thiazolidine-2-thione

{(S)-3-Methyl-1-[(1R,2R)-2-methyl-1-(2-thioxo-thiazolidine-3-carbonyl)-butylcarbamoyl]-butyl}-carbamic acid benzyl ester

Z-L-Leu-D-Ileu-L-(S-Bzl)Cys-OH

3-L-leucyl-1,3-thiazolidine-2-thione hydrobromide

3-(N-benzoyl-L-leucyl)-1,3-thiazolidine-2-thione