Used primarily as a key intermediate in pharmaceutical synthesis, especially in Suzuki-Miyaura cross-coupling reactions to construct biaryl frameworks found in bioactive molecules. Its boronate ester group enables efficient carbon-carbon bond formation under mild conditions, making it valuable in the development of indole-based drug candidates. Commonly applied in research settings for the synthesis of serotonin receptor modulators, anti-inflammatory agents, and kinase inhibitors. Also utilized in the preparation of functional materials and fluorescent probes due to the indole core’s inherent photophysical properties.