m-PEG-Succinimidyl Succinate(m-PEG-SS), MW 20K is an active ester polyPEG reagent with a C2 aliphatic ester bond between PEG and NHS ester, used in medical research, drug release, nano Technology and new material research, cell culture.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.