Used as a key intermediate in the synthesis of coumarin-based compounds with biological activity, particularly in pharmaceuticals and agrochemicals. Its boronic acid functional group enables Suzuki-Miyaura cross-coupling reactions, allowing the formation of carbon-carbon bonds in drug development. Commonly employed in the preparation of fluorescent probes and sensors due to the inherent photophysical properties of the coumarin scaffold. Also applied in materials science for designing organic semiconductors and luminescent materials.