Cyclo(-Gly-Gly)
Cyclo(-Gly-Arg-Gly-Glu-Ser-Pro)
Cyclo(-Gly-Arg-Gly-Asp-Ser-Pro-Ala)
Cyclo(-Gly-Arg-Gly-Asp-Ser-Pro)
Cyclo(-Glu-Gly)
Cyclo(-Glu-Glu)
Cyclo(-Gln-Trp-Phe-Gly-Leu-Met)
Cyclo(-Gln-Gly)
Cyclo(-D-Tyr-Arg-Gly-Asp-Cys(carboxymethyl)-OH) sulfoxide
Cyclo(-D-Trp-Tyr)
Cyclo(-D-Ser-Pro-D-Val-Leu-D-Trp)
Cyclo(-D-Leu-D-Pro)
Cyclo(-D-His-Pro)
Cyclo(-D-Glu-Ala-D-allo-Ile-Leu-D-Trp)
Cyclo(-D-Ala-Val)
Cyclo(-D-Ala-D-Ala)
Cyclo(-Asp-Phe)
Cyclo(-Asp-Gly)
Cyclo(-Asp-Asp)
Cyclo(-Arg-Gly-Asp-D-Tyr-ε-azido-Nle)
