Used primarily as an intermediate in the synthesis of pharmaceuticals and agrochemicals. Its high reactivity, due to the presence of electron-withdrawing halogen atoms, makes it valuable in introducing fluorinated ester groups into more complex molecules. Commonly employed in the preparation of fluorinated building blocks for drug development, especially in antitumor and antiviral agents. Also utilized in the manufacture of specialty fluorinated compounds for crop protection chemicals, where the fluorine atom enhances biological activity and metabolic stability. Handling requires caution due to its lachrymatory and corrosive properties.