This chemical is widely used in bioconjugation and drug delivery systems due to its ability to form stable disulfide bonds, which are crucial for targeted release mechanisms. It serves as a linker in the development of antibody-drug conjugates (ADCs), enabling the attachment of therapeutic agents to antibodies for precise delivery to cancer cells. Additionally, it is employed in the synthesis of functionalized nanoparticles and polymers, enhancing their biocompatibility and stability. Its PEG (polyethylene glycol) segments improve solubility and reduce immunogenicity, making it valuable in biomedical research and therapeutic applications. The disulfide bond also allows for controlled release in response to reducing environments, such as those found in tumor cells.