Used in organic synthesis as an intermediate for pharmaceuticals and bioactive compounds. Its indole core makes it valuable in developing serotonin receptor ligands and other central nervous system agents. Commonly employed in the preparation of fluorescent dyes and sensors due to the inherent optical properties of the indole scaffold. Also utilized in the research of anti-inflammatory and anticancer agents, where substituted indoles show promising biological activity. Serves as a building block in the synthesis of more complex heterocyclic systems for drug discovery and material science applications.