Used primarily as a key intermediate in pharmaceutical synthesis, especially in Suzuki-Miyaura cross-coupling reactions to construct biaryl frameworks. Its boronate ester group enables efficient carbon-carbon bond formation, making it valuable in the development of drug candidates targeting kinase inhibitors and serotonin receptor modulators. Commonly employed in research settings for the preparation of complex indole derivatives with potential biological activity. Also utilized in the synthesis of functional materials and agrochemicals where indole scaffolds are required.