4-Arm PEG-NH2 (MW 40000)

Description

4-Arm PEG-NH2 MW 40000 4-Arm PEG-amine MW 40000 is a multi-arm PEG derivative with amine groups at each end of four arms attached to a pentaerythritol core. The reactive primary amine or NH2 groups can react rapidly with activated carboxylic acids such as NHS esters to form stable amide bonds.