m-PEG10-Tos is widely used in bioconjugation and chemical synthesis as a versatile reagent for modifying biomolecules. Its tosyl group acts as a reactive handle, enabling the attachment of polyethylene glycol (PEG) chains to proteins, peptides, or other substrates. This PEGylation process enhances the solubility, stability, and bioavailability of therapeutic compounds, making it valuable in drug delivery systems. Additionally, it is employed in surface modification to create non-fouling coatings on medical devices, reducing protein adsorption and improving biocompatibility. Its applications also extend to the development of hydrogels and other biomaterials for tissue engineering and controlled release systems.