Used primarily as a reagent in organic synthesis, this compound serves as a source of benzotriazolylmethyl groups. It is particularly useful in the preparation of functionalized amines and amides through alkylation reactions. Its ability to act as a chloromethylating agent makes it valuable in the development of pharmaceutical intermediates, where controlled introduction of methylene bridges is required. It is also employed in the synthesis of heterocyclic compounds and in polymer chemistry for cross-linking or modifying resin structures. Due to its reactivity, it is handled under controlled conditions to achieve selective transformations in complex molecule assembly.