TCO-PEG12-TCO is a PEG reagent containing TCO moiety at both ends of the molecule. TCO group specifically and efficiently reacts with tetrazine. The hydrophilic PEG12 arm increases the solubility of compounds in aqueous media. Reagent grade, for research use only. 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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