m-PEG-Propionaldehyde, MW 5K is an aldehyde pegylation reagent. Propionaldehyde reacts with hydrazide to form stable hydrazone bonds or reacts with alkoxyamines to form stable oxime bonds.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.