Z-L-Lys(Boc)-L-Lys(Boc)-OH

N-benzyloxycarbonyl-L-valylglycyl-Nε-tert-butoxycarbonyl-L-lysyl-Nε-tert-butoxycarbonyl-L-lysine

Z-L-Val-Gly-L-Lys(BOC)-L-Lys(BOC)-OPFP

Z-L-Arg(H*HCl)-L-Trp-Gly-L-Lys(BOC)-L-Pro-OBzl

Z-L-Val-Gly-L-Lys(BOC)-L-Lys(BOC)-L-Arg(NO2)-L-Arg(NO2)-L-Pro-OH