4arm PEG Azide, MW 10K is a multi-arm PEG derivative with an azide (N3) group at each end of the four arms attached to a pentaerythritol core. It has a larger molecular weight due to the increased number of reactive end groups, so it can carry more drug molecules.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
