TCO-PEG4-biotin is a biotinylation reagent containing TCO moieties. TCO enable click chemistry with tetrazine. The hydrophilic PEG spacer improves the water solubility of compounds. . 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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