Used as a crosslinking agent in polymer chemistry, particularly in the synthesis of highly crosslinked polystyrene resins for solid-phase synthesis and chromatography supports. Its three bromomethyl groups provide multiple reactive sites for functionalization, enabling the creation of robust, insoluble polymer matrices. Commonly employed in the preparation of ion-exchange resins and as a linker in combinatorial chemistry. Also utilized in the development of specialty coatings and encapsulation materials where enhanced thermal and mechanical stability are required.