Methoxy PEG Succinimidyl Carboxymethyl Ester (mPEG-SCM), MW 20K CAS:92451-01-9 is a kind of mPEG-NHS reagent. Its hydroxyl terminus is activated as succinimide acetate. It is connected with the free amino group of the active drug, and the aminoacetic acid bond produced by coupling is more stable than the ester bond.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
