Cyanine3B tetrazine

Cat. # Quantity Price Lead time
193E0 1 mg $348 in stock
293E0 5 mg $737 in stock
493E0 25 mg $1950 in stock
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Cyanine3B methyltetrazine derivative for Inverse electron demand Diels-Alder (IEDDA) conjugation with strained olefins and terminal alkenes. IEDDA is the fastest cycloaddition reaction among click reactions known. Methyltetrazines have optimal physiological pH stability while maintaining extremely high reactivity towards cyclooctenes. Tetrazines also react with some strained cycloalkynes.

Cyanine3B is a yellow-emitting cyanine dye. It is an improved version of the Cyanine3 fluorophore, with significantly higher fluorescence quantum yield and photostability.

Absorption and emission spectra of Cyanine3B

Absorption and emission spectra of Cyanine3B

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General properties

Appearance: red powder
Molecular weight: 743.89
Molecular formula: C41H41N7O5S
Solubility: good in DCM, DMSO, DMF
Quality control: NMR 1H and HPLC-MS (95+%)
Storage conditions: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Desiccate. Avoid prolonged exposure to light.
MSDS: Download
Product specifications

Spectral properties

Excitation/absorption maximum, nm: 559
ε, L⋅mol−1⋅cm−1: 121000
Emission maximum, nm: 571
Fluorescence quantum yield: 0.68
CF260: 0.044
CF280: 0.077
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