ProductDescription
4-armPEGsuccinimidylsuccinate聽ester(4-armPEG-SS)isamultiarmPEGderivativewithsuccinimidylNHSactiveestergroupsateachterminalofthe4聽armsconnectedtoonepentaerythritolcore.PEG-SS(succinimidylsuccinate聽ester)isonetypeofPEG-NHSreagents.ThereisaC2hydrocarbonesterlinkagebetweenPEGandtheNHSester.NHSisagoodleavinggroupwhichcanreactwithamine-containingmoities.