Used as an intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and agrochemicals. It serves as a building block for heterocyclic compounds due to the presence of aldehyde and hydroxyl functional groups. Commonly employed in the synthesis of Schiff bases, which exhibit biological activities such as antimicrobial and antifungal properties. Also utilized in the development of sensors and dyes because of its ability to undergo intramolecular proton transfer, leading to fluorescence or color changes upon binding to specific ions or molecules. Plays a role in coordination chemistry as a ligand for metal complexes with potential catalytic or medicinal applications.