Used primarily as an intermediate in organic synthesis, this compound serves in the preparation of pharmaceuticals and agrochemicals. Its reactivity allows for the introduction of ester and chloromethyl functionalities into larger molecules, making it valuable in the development of active ingredients in crop protection products. It is also employed in the synthesis of specialty polymers and as a reagent in laboratory research for constructing carbon-chain extensions. Due to its lachrymatory and corrosive nature, handling requires strict safety controls.