This chemical is widely used in bioconjugation and drug delivery systems due to its ability to form disulfide bonds with thiol-containing molecules. It is particularly valuable in the development of targeted therapeutics, where it enables the attachment of bioactive molecules to carriers like proteins or nanoparticles. The Boc (tert-butoxycarbonyl) protecting group ensures stability during synthesis, while the PEG2 spacer enhances solubility and reduces steric hindrance. It is also employed in the creation of cleavable linkers, allowing controlled release of drugs in response to reducing environments, such as those found in cancer cells. Additionally, it finds applications in surface modification for biosensors and diagnostic tools, improving specificity and functionality.