Fradafiban binds to the human platelet GP IIb IIIa complex with a Kd value of 148 nM. Fradafiban is a non-polypeptide platelet glycoprotein IIb IIIa antagonist.
UR-2922 is an oral antagonist of platelet GPIIbIIIa. UR-2922 possessed a high affinity for the human platelet receptor (K(d) <1 nM) and a slow dissociation rate (k(off)= 90 min) in vitro. UR-2922 induced no ligand-induced binding sites (LIBS) expression
UR-3216, a prodrug, is a selective and orally active platelet surface glycoprotein (GPIIb/IIIa) receptor antagonist. UR-3216 is the very tight binding of its active metabolite to platelets (Ki for resting platelets is < 1 nM). UR-2992, the active form of
Clopidogrel HCl is the salt form of Clopidogrel (free base), an inhibitor of ADP-induced platelet aggregation acting by direct inhibition of adenosine diphosphate (ADP) binding to its receptor and of the subsequent ADP-mediated activation of the glycoprotein GPIIbIIIa complex.