Used primarily as a precursor in the synthesis of anticoagulant drugs, such as warfarin, which are crucial in preventing blood clots in patients with conditions like deep vein thrombosis or atrial fibrillation. It also serves as an intermediate in the production of rodenticides, effectively controlling rodent populations by disrupting their blood clotting mechanisms. In addition, it finds application in organic synthesis for creating various coumarin derivatives, which are utilized in perfumes, dyes, and fluorescent materials. Its role in research includes studying enzyme inhibition and developing new pharmaceutical compounds.