2112738-60-8

N-Mal-N-bis(PEG4-NHS ester) is a branched maleimide linker with two terminal NHS esters. NHS esters is used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule.