Phe-Pro-NHPh
glycine
N-tert-butyloxycarbonyl-L-phenylalanyl-L-prolylglycine
tert-butyloxycarbonyl-prolyl-glycine methyl ester
N-tert-butyloxycarbonyl-L-prolylglycine
N-tert-butyloxycarbonyl-O-benzyl-L-tyrosyl-L-prolyl-L-phenylalanyl-L-prolylglycyl-L-prolyl-L-isoleucine
N-tert-butyloxycarbonyl-L-tyrosyl-L-prolyl-L-phenylalanyl-L-prolylglycyl-L-prolyl-L-isoleucine
tert-butyl N-tert-butyloxycarbonyl-L-prolyl-L-phenylalanyl-L-prolylglycyl-L-prolyl-L-isoleucinate
L-prolyl-L-phenylalanyl-L-prolylglycyl-L-prolyl-L-isoleucine
des-Tyr1-β-casomorphin-5