TCO-PEG8-NHS ester

TCO-PEG8-NHS Ester is a click chemistry PEG crosslinker with a TCO moiety and a NHS ester. The hydrophilic PEG spacer increases water-solubility and decreases steric hindrance during ligation. This reagent can be used to label antibodies, proteins and other primary amine-containing macromolecules with TCO moiety.