Phenindione is an anticoagulant and vitamin K antagonist. It inhibits the reduction of vitamin K1 epoxide to vitamin K1 by vitamin K1 epoxide reductase in rat liver homogenates in a concentration-dependent manner. In vivo, phenindione (500 mg/kg) inhibits prothrombin synthesis and conversion of vitamin K1 epoxide to vitamin K1 in rats by 50 and 57%, respectively. Dietary administration of phenindione (4 mg/kg per day) inhibits aortic atherosclerosis or intracardial thrombosis in rat models of diet-induced atherosclerosis or intravascular thrombosis, respectively.
??? ??
light yellow fluffy fine flakes
??
Oral anticoagulant (indanedione).
Purification Methods
Crystallise the dione from EtOH (m 156o) or CHCl3 (m 148-150o). [Beilstein 7 H 808, 7 III 4100, 7 IV 2570.]
