mPEG-Succinimidyl Propionate (mPEG-SPA), MW 30K, is an amine pegylation reagent that reacts with primary amine groups under basic conditions. Similar to mPEG-SC, mPEG-SPA also has high activity and good stability in aqueous solution. Functionalized PEG lipids and phospholipids are available for protein-PEG conjugation.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.