PYR-PRO-SER-LYS-ASP-ALA-PHE-ILE-GLY-LEU-MET-NH2

PGLU-PRO-SER-LYS-ASP-ALA-PHE-ILE-GLY-LEU-MET-NH2

5-Oxo-L-Pro-L-Pro-L-Ser-L-Lys-L-Asp-L-Ala-L-Phe-L-Ile-Gly-L-Leu-L-Met-NH2

5-Oxo-L-prolyl-L-prolyl-L-seryl-L-lysyl-L-aspartyl-L-alanyl-L-phenylalanyl-L-isoleucylglycyl-L-leucyl-L-methioninamide