Used primarily as a reactive intermediate in organic synthesis, especially in the preparation of fluorinated compounds for pharmaceuticals and agrochemicals. Its unique pentafluorophenyl group enhances electron-withdrawing properties, making it valuable in cycloaddition reactions and as a building block in the development of functional materials. It also serves as a precursor in the synthesis of isonitriles and other nitrogen-containing heterocycles, which are important in medicinal chemistry. Due to its stability imparted by fluorine substitution, it is favored in reactions requiring selective transformations under mild conditions.