Used primarily as an alkylating agent in organic synthesis, this compound is valuable for introducing the pyrrolidine moiety into various target molecules. It reacts selectively with nucleophiles such as amines and thiols, making it useful in the preparation of pharmaceutical intermediates and bioactive compounds. Its reactivity allows for the formation of amide or sulfide linkages, which are common in drug design. It is also employed in the synthesis of heterocyclic compounds and functionalized peptides, where controlled alkylation is required. Due to its ability to crosslink functional groups, it finds use in the development of enzyme inhibitors and receptor ligands in medicinal chemistry research.