Used in the synthesis of pharmaceutical intermediates, particularly in the development of selective serotonin reuptake inhibitors (SSRIs) and other central nervous system (CNS) active compounds. Its halogenated indole structure makes it a valuable building block in medicinal chemistry for constructing biologically active molecules. It is also employed in the preparation of kinase inhibitors and receptor modulators in research settings. Due to the presence of reactive sites, it facilitates coupling reactions in heterocyclic compound design for drug discovery.