Axispharm offers you high purity Biotin-PEG-Succinimidyl Carbonate, MW 5K, a PEG polymer active ester that reacts with amines by forming an amide bond. We also offer you a wider variety of polymer active fats.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.