Bis(m-PEG4)-N-OH is a OH protected secondary amine mPEG linker. By reductive deprotection of the hydroxy group, the free secondary amine can be coupled with carboxylic acid, active ester or carbonyl bearing molecules. The two mPEG side chains greatly increase the compound’s solubility in aqueous media.
Axispharm offers 3000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.