Used in click chemistry reactions, particularly in copper-catalyzed azide-alkyne cycloaddition (CuAAC), to introduce functional groups into complex molecules. The azide group reacts selectively with alkynes to form stable triazole linkages, enabling bioconjugation, labeling of biomolecules, and synthesis of pharmaceutical intermediates. The Boc-protected amine allows for controlled deprotection and further derivatization, while the bromine handle provides a site for cross-coupling reactions such as Suzuki or Buchwald-Hartwig aminations. Commonly applied in medicinal chemistry for building compound libraries and modifying peptides or heterocycles.