Used primarily as a key intermediate in the synthesis of pharmaceuticals, especially in the development of anticoagulant drugs and anti-inflammatory agents. It serves as a building block in constructing complex heterocyclic systems due to its reactive anhydride functionality. Its methoxy-substituted structure enhances electron density, improving selectivity in nucleophilic substitution reactions. Commonly employed in research settings for the preparation of bioactive molecules and functionalized polymers. Also utilized in the design of fluorescent probes and sensors owing to its aromatic framework and favorable photophysical properties.