IC50: 20 nM (α V β 3 Integrin), 3000 nM (α IIb β 3 Integrin), 4000 nM (α V β 5 Integrin)
Cyclo(RGDyK) (c(RGDyK(SAA)) shows high affinity and selectivity for α V β 3 over α V β 5 (IC 50 =4000 nM) and α IIb β 3 (IC 50 =3000 nM).