Used primarily in organic synthesis and pharmaceutical research, this compound serves as a versatile building block for modifying molecules. It features a Boc (tert-butoxycarbonyl) protecting group that safeguards amine functionalities during synthesis, a PEG4 linker that enhances solubility and biocompatibility, making it valuable in drug delivery systems, and a sulfonic acid group that allows for effective conjugation with various substrates, enabling the creation of targeted therapeutics. Additionally, it is employed in the development of peptide-based drugs, where it aids in improving stability and bioavailability. Its application extends to bioconjugation techniques, facilitating the attachment of functional groups to biomolecules for diagnostic and therapeutic purposes.