Boc-Phe-Leu-OH

D-Leu-Gly-OH

Glu-Gly-OH

His-Val-OH

Leu-Val-OH

S-Trityl-L-penicillanine

Thr-Ala-OH

L-Valine amide hydrobromide

L-a-Aminoadipic acid d-tert-butyl ester

Na-Boc-Ng-allyloxycarbonyl-L-2,4-diaminobutyric acid

L-Pyroglutamyl-L-alanine

焦谷氨酰丙氨酸