For-L-norleucine

Cyclo(-Asp-Gly)

Cyclo(-Gly-L-Glu)

Cyclo(L-Trp-L-Trp)

Allyloxycarbonyl-3-(3'-pyridyl)-DL-alanine

(R)-3-Boc-amino-5-(carbonylmethyl)-2,3-dihydro-1,5-benzothiazepin-4(5H)-one

Acetyl-3-cyano-DL-phenylalanine

Acetyl-O-methyl-L-tyrosine

Boc-D-phenylglycine N-hydroxysuccinimide ester

CHLOROACETYL-DL-NORVALINE

L-Norlevaline-4-nitoranilide hydrobromide