Used as a key intermediate in the synthesis of fluorescent dyes and optical brighteners due to its carboxylic acid functionality and amide linkage, which enhance photostability and light absorption properties. Also employed in the development of coordination polymers and metal-organic frameworks (MOFs) where it acts as a bridging ligand, enabling the formation of structured networks with potential applications in sensing and catalysis. Its bifunctional nature allows for conjugation in bioactive molecule design, particularly in drug delivery systems where controlled release is required. Additionally, it finds use in surface modification of nanoparticles for improved dispersion and functionalization in composite materials.