What material is classified as an anticoagulant?

The correct answer is found in Warfarin, which is classified as an anticoagulant. This substance works by inhibiting vitamin K epoxide reductase, an enzyme critical for the synthesis of several clotting factors in the liver. The result is a reduced ability of the blood to clot, which makes it effective in preventing blood clots. Warfarin is commonly used in medical settings to manage conditions such as atrial fibrillation and venous thrombosis where the risk of clotting is increased.

While bromadiolone might also be considered in the context of anticoagulant rodenticides, Warfarin is the more widely recognized substance specifically referred to as an anticoagulant due to its extensive use in both medicine and pest control to manage rodent populations. Chlorpyrifos and diazinon do not fall into the anticoagulant category as they function as organophosphate insecticides, working to control pests through a different mechanism entirely.