4arm-PEG-SS

4 arm-Polyethylene glycol-Succinimidyl Succinate,4 arm-PEG-SS,SS-PEG-4 arm from ruixi 4-arm PEG succinimidyl succinate ester (4-arm PEG-SS) is a multiarm PEG derivative with succinimidyl NHS active ester groups at each terminal of the 4 arms connected to onepentaerythritol core. PEG-SS (succinimidyl succinate ester) is one type of PEG-NHS reagents. There is a C2 hydrocarbon ester linkage between PEG and the NHS ester. NHS is a good leaving group which can react with amine-containing moities.

msds of 4 arm-PEG-SS