m-PEG-Hydrazide, MW 20K is a high quality aldehyde reactive PEG, ketone reactive PEG and carboxyl reactive PEG. Reaction with aldehydes and ketones to obtain stable hydrazones in one step. For labeling glycoproteins, carbohydrates with oxidizable sugars or aldehydes. The hydrazide moiety reacts with the aldehyde to form a hydrazone bond.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.