Used as a key intermediate in the synthesis of fluorescent dyes and optical brighteners due to its aldehyde and hydroxyl functional groups, which allow for easy derivatization. Commonly employed in the development of sensors for metal ion detection, especially aluminum and zinc, because of its chelating properties and strong emission upon complexation. Also utilized in the preparation of coordination polymers and metal-organic frameworks (MOFs) where it acts as a bridging ligand. Its structural features make it suitable for research in photoluminescent materials and organic electronics.