propargyl PEG5-NHS carbonate contains a propargyl and an NHS carbonate group. The reactive NHS carbonate can be used to label the amine-bearing biomolecules, such as lysine residue on protein, amine modifid oligonucleotide and other amine containing biopolymers. The resulting terminal alkyne tagged complex can under click chemistry in the presence of copper catalyst with azide-modified biomolecules. PEG spacer increases the solubility of the resulting complex in aqueous media.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.