Used as a crosslinking agent in polymer chemistry, particularly in the development of responsive hydrogels and smart materials. Its disulfide bond enables redox-sensitive behavior, making it valuable in drug delivery systems where controlled release is required in reducing environments, such as intracellular spaces. The tosylate groups act as excellent leaving groups, facilitating nucleophilic substitution reactions (e.g., with thiols) for integration into polymeric networks or bioconjugation. Commonly applied in biomedical engineering for designing biodegradable networks and in bioconjugation techniques due to its selective reactivity and stability under physiological conditions.