Used in organic synthesis as a building block for pharmaceuticals and bioactive compounds. Serves as an intermediate in the preparation of indole-based drugs, including those with potential neurological and psychiatric applications. Employed in research settings to develop serotonin receptor modulators and other central nervous system agents. Also utilized in the synthesis of fluorescent dyes and imaging probes due to the indole scaffold’s favorable photophysical properties. Common in medicinal chemistry for structure-activity relationship studies involving tryptamine derivatives.