8-Arm PEG-NH2 (MW 40000)

8-Arm PEG-NH2 (MW 40000) [also known as 8-Arm PEG-Amine (MW 40000) ] is a multi-armed PEG derivative where each of the eight arms terminates in an amine group. These primary amine or NH2 groups can swiftly react with activated carboxylic acids, such as NHS esters, to form stable amide bonds.