This chemical is widely used in the field of bioconjugation and peptide synthesis. Its structure, featuring a Boc-protected amine and an aldehyde group, makes it a valuable linker for connecting molecules, particularly in the development of antibody-drug conjugates (ADCs). The aldehyde group allows for selective conjugation with amine-containing molecules, while the PEG spacer enhances solubility and reduces steric hindrance. Additionally, it is employed in the synthesis of complex biomolecules, where controlled and site-specific modifications are required. Its stability and reactivity make it a preferred choice in pharmaceutical research and drug delivery systems.