Used in pharmaceutical research as an intermediate in the synthesis of biologically active compounds, particularly in the development of kinase inhibitors and anti-inflammatory agents. Its structure supports functionalization at multiple sites, making it valuable in medicinal chemistry for constructing indole-based drug candidates. Also employed in the preparation of fluorescent probes and imaging agents due to the indole core’s inherent photophysical properties. Commonly utilized in structure-activity relationship (SAR) studies to optimize potency and selectivity in new therapeutic molecules.