BCN-PEG4-NHS ester CAS:2252422-32-3 is a bifunctional PEG reagent. It includes a BCN group, a PEG4 spacer, and an NHS ester. BCN reacts with azides, forming triazole linkages in copper-free click chemistry. PEG4, a four-unit polyethylene glycol molecule, is biocompatible. The NHS ester connects with primary amines, creating stable amide bonds. This compound finds use in bioconjugation, drug delivery, and material science.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.