Bis-PEG5-NHS ester (CAS 756526-03-1)

Bis-PEG5-NHS ester is a bifunctional crosslinker that is extensively utilized in biochemical and polymer research due to its unique structural and chemical properties. This compound features two NHS (N-hydroxysuccinimide) ester groups, which are connected by a polyethylene glycol (PEG) chain consisting of five ethylene glycol units. The NHS ester groups are highly reactive towards primary amine groups, facilitating the formation of stable amide bonds. This reactivity is central to its mechanism of action, as it allows for the covalent attachment of various biomolecules or polymers at either end of the PEG chain, thereby enabling the conjugation of proteins, peptides, antibodies, or other molecules with specificity and controlled orientation. The PEG spacer enhances the solubility and reduces the immunogenicity of conjugated complexes, making Bis-PEG5-NHS ester an invaluable tool in the development of bioconjugates for research purposes. Its use in creating PEGylated compounds or in the modification of surfaces with bioactive molecules underscores its significance in advancing studies related to molecular interactions, drug delivery systems, and the engineering of biomaterials.