Used in organic synthesis as an intermediate for pharmaceuticals and biologically active compounds. Serves as a building block in the development of serotonin receptor modulators and other neuroactive agents. Commonly employed in research related to indole-based drug candidates, particularly in the study of central nervous system disorders. Also utilized in the preparation of fluorescent probes and imaging agents due to the indole core’s favorable photophysical properties. Frequently involved in cross-coupling reactions to expand molecular diversity in medicinal chemistry.