ProductDescription
4-ArmPEG-carboxylicacid(4-armPEG-COOH)isamultiarmPEGderivativewithcarboxylicacidgroupsateachterminalofthefourarmsconnectedtoonehexaglycerolcore.Thereisamethylene(CH2)linkagebetweenPEGandtheCOOHgroup,oftencalledaceticacid(AA)orcarboxylmethyl(CM).MoredetailscanbefoundattheFAQwebpage.PEGacidcanbeusedtoreactwithaminegroupswithpeptidecouplingreagentssuchasNHSandDCC,EDC.

