Amine-PEG-CH2OOH(NH2-PEG-CM), MW 3.4K is a heterobifunctional PEG polymer with an amine and a carboxylic acid at the end. The carboxylic acid can react with primary amines in the presence of activators such as EDC or HATU, Forms stable amide bonds.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.