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Warfarin (Coumafene) is a vitamin K antagonist, and it works by blocking the action of vitamin K, which is necessary for the synthesis of clotting factors in the liver. Warfarin blocks the action of vitamin K by inhibiting the enzyme gamma-glutamyl carboxylase, which is responsible for the carboxylation of glutamate residues in the clotting factors. This prevents the production of functional clotting factors, leading to an anticoagulant effect.

(S)-Warfarin is a more effective enantiomer of Warfarin. It is used as a vitamin K antagonist, with anticoagulant.

Warfarin-d5 is a deuterated compound of Warfarin.

An anticoagulant that acts by inhibiting the synthesis of vitamin K-dependent coagulation factors. Warfarin is indicated for the prophylaxis and/or treatment of venous thrombosis and its extension, pulmonary embolism, and atrial fibrillation with embolization. It is also used as an adjunct in the prophylaxis of systemic embolism after myocardial infarction. Warfarin is also used as a rodenticide.

(S)-Warfarin-d5 is a deuterated compound of (S)-Warfarin.

R-(+)-Warfarin-d5 is a deuterated compound of R-(+)-Warfarin.