m-PEG-Succinimidyl Succinate (m-PEG-SS), MW 5K is a linear reactive ester polyPEG reagent that cleaves ester bonds under conventional ester cleavage reaction conditions at pH 7-8.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.