Used as a crosslinking agent in polymer chemistry, particularly in the modification of proteins and peptides due to its ability to react selectively with thiol groups. Its hydroxyl-functionalized alkyl chain enables further chemical derivatization or integration into hydrophilic systems. Commonly applied in bioconjugation techniques for drug delivery systems, hydrogel formation, and surface functionalization of biomaterials. Also utilized in the development of responsive polymers where controlled release or specific binding is required.