4 arm PEG Amine

4 arm PEG Amine(NH2) is a multi-arm polyethylene glycol with amine groups at each terminal of the four arms, 4 arm PEG-NH2 have multiple NH2 reactive groups that can be used to modify proteins, peptides and other materials via their functional groups, the reactive primary amine or NH2 group can rapidly react with activated carboxyl acid such as NHS ester to form stable amide bonds.

MSDS of 4 arm PEG Amine