Endo-BCN-PEG-Boc-Amine is a synthetic compound used in the field of pharmaceutical research and development. It belongs to the class of amine-functionalized polyethylene glycol (PEG) derivatives that are widely used in drug delivery systems. The compound is characterized by the presence of three distinct functional groups: the endo-BCN moiety, the PEG spacer, and the Boc-protected primary amine. The endo-BCN group confers high reactivity towards strained cyclic alkene, which makes it an excellent candidate for bioconjugation reactions. The PEG spacer provides biocompatibility, solubility, and steric hindrance, which minimizes non-specific interactions with biological molecules. The Boc-protected primary amine is a versatile functional group that can be selectively deprotected under mild conditions to expose the primary amine for further derivatization. The unique combination of these functional groups makes Endo-BCN-PEG-Boc-Amine a promising candidate for developing targeted drug delivery systems with improved efficacy and reduced toxicity.