c(RGDfK) cyclo(RGDfK)
c(RGDfK-COCH2SH) cyclo(RGDfK-COCH2SH)
cyclo (Arg-Gly-Asp-d-Tyr-Val) cyclo (Arg-Gly-Asp-Tyr-Val)
cyclo (Arg-Gly-Asp-d-Tyr-Lys) cyclo (Arg-Gly-Asp-Tyr-Lys)
cyclo (Arg-Gly-Asp-D-Tyr-Glu) cyclo (Arg-Gly-Asp-Tyr-Glu)
cyclo (Arg-Gly-Asp-D-Tyr-Cys) cyclo (Arg-Gly-Asp-Tyr-Cys)