Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of indole-based drugs. Its cyano and carboxylate functional groups allow for further chemical modifications, making it valuable in constructing complex molecules for medicinal chemistry. Commonly employed in research settings to prepare bioactive molecules, including kinase inhibitors and serotonin receptor modulators. Also utilized in the preparation of fluorescent probes due to the indole core’s inherent photophysical properties.