Used as an intermediate in the synthesis of pharmaceuticals and biologically active compounds, particularly in the development of nitrogen-containing heterocyclic drugs. Its aldehyde functional group allows for easy modification, making it valuable in creating Schiff bases or undergoing reduction and condensation reactions. Commonly employed in research settings for constructing complex organic molecules, especially those targeting central nervous system agents or antimicrobial agents. Also utilized in the preparation of dyes and fluorescent probes due to its aromatic and heterocyclic backbone.