trans-1,4-CHD-(Cbz-L-Cys-D-Pro-Bt)2

trans-1,4-CHD-(Cbz-L-Cys-L-Pro-Bt)2

(2S,3R)-2-((R)-3-Acetylsulfanyl-2-benzyloxycarbonylamino-propionylamino)-3-hydroxy-butyric acid ethyl ester

N-Cbz-L-Cys-L-Phe-OH

N-((benzyloxy)carbonyl)-S-(3-((2R,3S,4R,5R,6R)-3,4,5-triacetoxy-6-(acetoxymethyl)tetrahydro-2H-pyran-2-yl)propyl)-L-cysteine