Used as a key intermediate in the synthesis of high-performance polymers and specialty resins, particularly in the production of liquid crystalline polyesters. Its methoxy and carboxylic acid functional groups enable controlled reactivity in polymerization processes, enhancing thermal stability and mechanical strength of the resulting materials. Also employed in the development of metal-organic frameworks (MOFs) due to its rigid aromatic structure and ability to chelate metal ions. Additionally, it serves as a building block in pharmaceuticals and agrochemicals for constructing complex molecular architectures.