Widely used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of anticoagulant and anti-inflammatory agents. Its structure supports the construction of coumarin-based derivatives, which are important in drug design due to their biological activity and ease of functionalization. Commonly employed in research settings for generating novel heterocyclic compounds with potential therapeutic effects. Also utilized in the preparation of fluorescent dyes and optical brighteners due to the inherent chromophoric properties of the coumarin scaffold. Its ester group allows for easy modification, making it valuable in combinatorial chemistry and medicinal chemistry workflows.