(S)-4-Methyl-2-{(S)-2-[2-(2-methyl-propane-2-sulfonyl)-allyloxycarbonylamino]-3-phenyl-propionylamino}-pentanoic acid benzyl ester

hydrochloride of 4-nitrobenzyl ester of glycyl-glycyl-L-phenylalanyl-L-leucine

(BOC)2Phe-OH

(BOC)2Tyr(Bn)-OH

Boc2-Phe-Leu-OBzl