Used in organic synthesis and drug development as a protective group for amines and hydroxyl groups, enabling selective reactions in complex molecules. It is particularly valuable in peptide synthesis, where it helps control the assembly of amino acids without unwanted side reactions. The PEG (polyethylene glycol) spacer enhances solubility in aqueous and organic solvents, facilitating purification and handling. The Boc (tert-butoxycarbonyl) group provides temporary protection for amines, which can be removed under mild acidic conditions. This compound is also employed in bioconjugation chemistry, linking biomolecules or drugs to carriers for targeted delivery systems. Its versatility makes it a key reagent in the production of pharmaceuticals, polymers, and advanced materials.