This chemical is commonly used in the field of bioconjugation and peptide synthesis. It serves as a protective group for amines, particularly in the synthesis of complex molecules like peptides and proteins. The PEG (polyethylene glycol) spacer enhances solubility and reduces steric hindrance, making it easier to handle and react in aqueous environments. The Boc (tert-butyloxycarbonyl) group provides temporary protection for amine functionalities, which can be selectively removed under mild acidic conditions without affecting other sensitive parts of the molecule. This makes it a valuable tool in the development of pharmaceuticals, especially in the creation of drug delivery systems and targeted therapies. Additionally, its application extends to the modification of biomolecules for research purposes, enabling the study of protein interactions and cellular processes.