Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and anti-inflammatory agents. Its structure allows for further functionalization at multiple sites, making it valuable in medicinal chemistry for building complex heterocyclic systems. Commonly employed in research settings to prepare analogs for biological screening, especially in oncology and central nervous system drug discovery. Also utilized in the preparation of fluorescent probes due to its indole core, which can be modified to enhance photophysical properties.