S-benzyl-N-(S-benzyl-N-benzyloxycarbonyl-L-cysteinyl)-L-cysteine ethyl ester
N-(Benzyloxycarbonyl-glycyl)-S-benzyl-L-cystein-ethylester
S-benzyl-N-[N-(toluene-4-sulfonyl)-L-pyroglutamyl]-L-cystein-ethyl ester
S-benzyl-N-(Nα-benzyloxycarbonyl-L-tryptophyl)-L-cystein-ethyl ester
Z-Ile-Cys(Bzl)