Used primarily as an intermediate in the synthesis of pharmaceuticals and agrochemicals. It plays a key role in the production of certain bioactive molecules, including components of antihistamines and antidepressants, through reactions involving its alpha-halo ketone functionality. This enables nucleophilic substitutions, cyclizations, and formation of heterocyclic compounds such as thiazoles and imidazoles, which are essential in drug development. Its reactivity is valuable in various organic transformations, including the synthesis of fine chemicals. Handle with care due to its lachrymatory and corrosive properties.