TYR-D-ALA-PHE-D-PRO-TYR-NH2

H-TYR-D-ALA-PHE-D-PRO-TYR-NH2

[D-Ala2,D-Pro4,Tyr5] -b-Casomorphin (1-5), amide

(D-ALA2,D-PRO4,TYR5)-BETA-CASOMORPHIN (1-5) AMIDE