Phenprocoumon

Phenprocoumon is an anticoagulant, functioning as a Vitamin K antagonist. It is a derivative of coumarin and is also marketed under the brand name Marcoumar. It is a vitamin K antagonist that inhibits coagulation by blocking synthesis of coagulation factors II, VII, IX and X. It is used for the prophylaxis and treatment of thromboembolic disorders.

It is marketed as Marcoumar by Roche.