Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and other biologically active compounds. Its indole core structure makes it valuable in medicinal chemistry for designing drugs targeting cancer, inflammation, and neurological disorders. Commonly employed in research settings to build complex heterocyclic systems due to its reactive amino and ester functional groups. Also utilized in the preparation of fluorescent probes and dyes owing to the inherent optical properties of the indole scaffold.