Used in organic synthesis as an intermediate for pharmaceuticals and bioactive compounds. Serves as a building block in the development of serotonin receptor modulators and other neuroactive agents. Employed in research related to indole-based drug discovery, particularly in studies targeting central nervous system disorders. Also utilized in the preparation of fluorescent probes and dyes due to the inherent photophysical properties of the indole scaffold. Common in medicinal chemistry for structure-activity relationship (SAR) studies involving tryptamine derivatives.