Used in organic synthesis as an intermediate for pharmaceuticals and bioactive compounds. Serves as a building block in the preparation of indole-based derivatives with potential medicinal properties, including anti-inflammatory, antimicrobial, and central nervous system agents. Also employed in research settings for developing fluorescent probes and sensors due to its aromatic and electron-rich structure. Its aldehyde functional group allows for easy modification through condensation or reduction reactions, enabling diverse chemical transformations.