Z-Ile-Leu-Phe-OH
N-Z-L-isoleucine N-hydroxysuccinimide ester
Leu-Phe-OH
Boc-Gly-Ser-Lys(Z)-Val-Ile-Leu-Phe-OH
Boc-Lys-Val-Ile-Leu-Phe-OH
(S)-2-{(S)-2-[(2S,3S)-2-((S)-2-Amino-3-methyl-butyrylamino)-3-methyl-pentanoylamino]-4-methyl-pentanoylamino}-3-phenyl-propionic acid
H-Gly-Ser-Lys(Z)-Val-Ile-Leu-Phe-OH.TFA
Z-Val-Ile-Leu-Phe-OH