8-Arm PEG-NH2 (MW 20000)

8-Arm PEG-NH2 (MW 20000) (8-Arm PEG-Amine (MW 20000) ) is a multi-arm PEG derivative with amino groups at the end of each of its eight arms. The primary amine or NH2 groups are reactive and can swiftly react with activated carboxylic acids (such as NHS esters) to form stable amide bonds.