Used as a key reagent in click chemistry, particularly in copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions, enabling efficient bioconjugation for pharmaceutical and biochemical research. Its azide group reacts selectively with alkynes to form stable triazole linkages, making it valuable in drug discovery, labeling of biomolecules, and development of functional materials. The electron-withdrawing ester and fluorinated aromatic ring enhance reactivity and stability, allowing for use in diverse synthetic pathways, including the preparation of fluorinated analogs in medicinal chemistry.