Used primarily as an intermediate in the synthesis of pharmaceuticals and biologically active compounds. Its structure supports the development of serotonin receptor modulators and other neuroactive agents. Commonly employed in research settings to construct indole-based scaffolds found in natural products and drug candidates. Also utilized in the preparation of fluorescent probes and dyes due to its favorable photophysical properties. Plays a role in the development of kinase inhibitors and anti-cancer agents through targeted molecular design.