TCO-PEG3-NHS Ester is a PEG linker containing a TCO moiety and a NHS ester. The hydrophilic PEG spacer increases water-solubility and a decreases steric hindrance during ligation. This reagent can be used to label antibodies, proteins and other primary amine-containing macromolecules with TCO moiety. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries. The half-life of TCO is short as it will naturally isomerize into CCO (cis-cycloctene) and lose the reactivity. TCO compound is not recommended for long term storage.
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