4-Arm PEG-Hydrazide (4-arm PEG-HZ), MW 5K is a multi-armed PEG derivative with hydrazide (CONHNH2) groups at each end of the four arms attached to a pentaerythritol core, Can react with ketones or aldehydes to form acylhydrazone linkers. Hydrazones are pH sensitive and hydrolyze under acidic conditions and can be used for reverse PEGylation.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
