简介内容: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 UR-3216, binds to platelets for a long period of time, while the unbound drug is rapidly cleared.