Used as a key intermediate in the synthesis of high-performance polymers and resins, particularly in the production of specialty polyesters and polycarbonates. Its hydroxyl and ester functional groups enable cross-linking and enhancement of thermal and mechanical properties in polymer matrices. Commonly applied in coatings, adhesives, and electronic materials where improved heat resistance and chemical stability are required. Also explored in pharmaceutical synthesis as a building block for bioactive molecules due to its rigid aromatic structure and functional versatility.