Used in organic synthesis as an intermediate for pharmaceuticals and bioactive compounds. Commonly employed in the preparation of indole-based drugs, particularly in the development of serotonin receptor modulators and anticancer agents. Serves as a building block in the synthesis of natural products and functional materials due to its reactive halogen site, which allows for cross-coupling reactions such as Suzuki and Heck reactions. Also utilized in the research of fluorescent dyes and agrochemicals.