Used primarily as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. Its reactive acyl chloride group allows it to form amide and ester bonds, making it valuable in constructing complex molecules. Commonly employed in the development of active ingredients in crop protection agents and in the synthesis of specialty polymers. Due to its chlorinated structure, it also serves in the preparation of other chlorinated compounds used in fine chemical manufacturing. Requires careful handling due to high reactivity with moisture and nucleophiles.