Used in bioconjugation and drug delivery systems, this compound serves as a linker molecule due to its PEG spacer, enhancing solubility and reducing immunogenicity. The Boc group provides protection for amines during synthesis, while the Tos group allows for selective deprotection or activation. It is particularly valuable in peptide and protein modifications, enabling controlled release and targeted delivery of therapeutic agents. Its applications extend to the development of prodrugs and bioconjugates for cancer therapy and other biomedical research.