Used as an intermediate in organic synthesis, particularly in the preparation of functionalized aromatic compounds for pharmaceuticals and specialty polymers. Its aldehyde and ester groups allow for selective reactions, making it valuable in constructing complex molecules. Commonly employed in condensation reactions to form heterocyclic systems or as a building block in the development of metal-organic frameworks (MOFs). Also finds use in the design of fluorescent dyes and optoelectronic materials due to its rigid aromatic structure and reactive functional groups.