Ala-Trp-OH

L-丙氨酰-L-色氨酸

O-tert-Butyl-L-allo-threonine

O-叔丁基-L-别苏氨酸

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