Used in bioconjugation and chemical biology, it serves as a linker or spacer molecule to connect different entities, such as drugs, proteins, or imaging agents, enhancing their stability and functionality. It is particularly valuable in drug delivery systems, where it helps in the targeted release of therapeutic compounds. Additionally, it finds application in the development of diagnostic tools, enabling the precise detection of biomarkers. Its hydrophilic PEG (polyethylene glycol) segments improve solubility and reduce immunogenicity, making it suitable for in vivo applications.