m-PEG-Succinimidyl Glutarate, MW 5K is a stable amide bond that can react with primary amine molecules at pH 7-9. The internal ester bond remains in the conjugated product formed between mPEG-SG and amine molecules.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
