This compound is widely used in the field of bioconjugation and drug delivery systems. Its primary application lies in its ability to act as a linker or spacer molecule, facilitating the attachment of various biomolecules, such as proteins, peptides, or drugs, to other functional entities. The PEG (polyethylene glycol) segment provides excellent solubility, reduced immunogenicity, and enhanced stability, making it ideal for improving the pharmacokinetics of therapeutic agents. Additionally, it is employed in the development of targeted drug delivery systems, where it helps in prolonging circulation time and reducing off-target effects. Its tosyl groups are reactive and allow for efficient conjugation with nucleophiles, making it a versatile tool in chemical synthesis and bioconjugation strategies.