Pro-Gly-Gly-OH

Boc-Gln-Gln-OH

Boc-Pro-Phe-OH

DL-a-Methylproline hydrobromide

Ala-Trp-OH

L-丙氨酰-L-色氨酸

D-Ala-Gly-OH

D-苏氨酸苄酯盐酸盐, D-Threonine Benzyl Ester Hydrochloride

Nd-Pyrazinylcarbonyl-L-ornithine

L-Proline 4-nitroanilide

L-脯氨酸4-硝基苯胺

Nin-Boc-L-tryptophan tert-butyl ester hydrochloride

L-Valine tert-butylamide hydrochloride