4arm PEG Amine, HCl Salt, MW 40K is a 4-arm PEG amine derivative, the hydrochloride salt provides stability to the 4-arm amine PEG in solid form. Amine groups are combined with carboxyl groups (-COOH) or other amine-reactive chemical groups. The number of ethylene oxide units in the PEG chain may not be equal for all arms.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.