Used primarily in organic synthesis, this compound serves as a key intermediate for the production of various pharmaceuticals, including antihistamines and antineoplastic agents. It is also employed in the manufacture of agrochemicals, such as herbicides and pesticides, due to its ability to introduce chloroethyl groups into target molecules. Additionally, it plays a role in the development of polymers and resins, where it acts as a cross-linking agent to enhance material properties. In research, it is utilized for modifying biomolecules and studying biochemical pathways. Its reactivity makes it valuable in creating complex chemical structures for industrial and scientific applications.