Ald-Ph-PEG2-NHS linker contains a benzaldehyde moiety and an NHS group. The benzaldehyde group readily reacts with primary amines, aminooxy and hydrazide. The NHS ester undergoes amide coupling with amino-bearing molecules. The hydrophilic PEG chain increases the water solubility of the compound.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.