endo-BCN-PEG12-NHS ester contains an NHS ester group and a BCN group on its ends. While the BCN group readily react with azide-tagged biomolecules, the NHS ester can be utilized for conjugation with amines bearing proteins, oligonucleotides, and other molecules. The hydrophilic PEG spacer increases the aqueous solubility of the resulting biomolecules.
Axispharm offers 3000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.