D-Ala-Leu-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

Z-Ala-Met-OH

Z-DL-Ala-Gly-OH

Z-Val-Pro-OH