Cyanine3 tetrazine

Cat. # Quantity Price Lead time
110E0 1 mg $110.00 in stock
210E0 5 mg $290.00 in stock
410E0 25 mg $690.00 in stock
510E0 50 mg $1270.00 in stock
610E0 100 mg $1990.00 in stock

Cyanine3 tetrazine is a fluorescent dye with tetrazine moiety for a conjugation reaction called TCO (trans-cyclooctene) ligation. Actually, tetrazines react not only with trans-cyclooctenes, but also with (methyl)cyclopropenes and strained non-benzo-fused cycloalkynes.

Cyanine3 is a moderately hydrophobic dye, enabling labeling in non-aqueous environment as well as in aqueous media containing some organic co-solvent like acetonitrile or DMSO. For reactions in purely aqueous media, a sulfonated version of this reagent is available.

Absorption and emission spectra of Cyanine3

Absorption and emission spectra of Cyanine3

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Sulfo-Cyanine7 tetrazine

Near infrared, water soluble dye methyltetrazine for the conjugation with strained cycloalkenes in TCO ligation reaction.

General properties

Appearance: dark red solid
Mass spec M+ increment: 611.4
Molecular weight: 727.64
Molecular formula: C40H46N7BF4O
Solubility: good in DCM, DMSO, DMF
Quality control: NMR 1H, HPLC-MS (95%)
Storage conditions: Storage: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.
MSDS: Download
Product specifications

Spectral properties

Excitation maximum, nm: 555
ε, L⋅mol−1⋅cm−1: 150000
Emission maximum, nm: 570
Fluorescence quantum yield: 0.31
CF260: 0.04
CF280: 0.09
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