Selectfluor® II reagent is widely used as a fluorinating agent in organic synthesis. It is particularly effective for introducing fluorine atoms into various organic molecules, enabling the production of fluorinated compounds that are valuable in pharmaceuticals, agrochemicals, and materials science. Its application includes the fluorination of alkenes, alkynes, and aromatic compounds, as well as the conversion of alcohols to alkyl fluorides. Additionally, it is employed in the synthesis of fluorinated heterocycles, which are crucial in drug development. The reagent is also used in the preparation of radiolabeled compounds for positron emission tomography (PET) imaging, aiding in medical diagnostics. Its high reactivity and selectivity make it a preferred choice in complex synthetic routes.