NCIt definition : The anhydrous form of argatroban, a synthetic derivative of L-arginine with antithrombotic
activity. Argatroban is a univalent and direct inhibitor of fibrin-bound thrombin.
This agent reversibly binds to the thrombin active site, thereby preventing the thrombin-dependent
reactions, which include the conversion of fibrinogen to fibrin; the activation of
factors V, VIII and XI; the activation of protein C; and platelet aggregation. Argatroban
is highly selective for thrombin and is able to inhibit the action of both free and
clot-associated thrombin. As a result, stabilization of blood clots occurs and coagulation
is inhibited.;