sulfo-Cyanine5.5 DBCO

Cat. # Quantity Price Lead time
173F0 1 mg $125 in stock
273F0 5 mg $325 in stock
473F0 25 mg $850 in stock
573F0 50 mg $1490 in stock
673F0 100 mg $1990 in stock
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Sulfo-Cyanine5.5 is a dye with far-red emission approaching NIR range. It has found application in non-invasive live-organism imaging. This particular derivative of sulfo-Cyanine5.5, the DBCO (or ADIBO) derivative, contains cycloalkyne for copper-free conjugation of this fluorophore with various organic azides.

The reaction between DBCO and azides is blazingly fast, orders of magnitude exceeding the rate of copper-catalyzed reaction between azides and terminal alkynes. It is also catalyst-free.

This reagent can be used to conjugate sulfo-Cyanine5.5 dye to a variety of azide-labeled molecules.

Absorption and emission spectra of sulfo-Cyanine5.5

Absorption and emission spectra of sulfo-Cyanine5.5

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BDP FL DBCO

BDP FL DBCO is a dye cyclooctyne for copper-free click chemistry reactions with azides. Its absorption and emission wavelengths correspond to those of fluorescein (FAM), but BDP FL is significantly more photostable.

Cyanine5.5 carboxylic acid

Cy5.5 unactivated free acid cyanine dye.

sulfo-Cyanine3.5 azide

Azide derivative of water-soluble sulfo-Cyanine3.5 dye for bioconjugation via click chemistry.

General properties

Appearance: dark blue solid
Molecular weight: 1317.69
Molecular formula: C61H59N4K3O14S4
Solubility: good in water, DMF, DMSO
Quality control: NMR 1H, HPLC-MS (95%)
MSDS: Download
Product specifications

Spectral properties

Excitation/absorption maximum, nm: 673
ε, L⋅mol−1⋅cm−1: 211000
Emission maximum, nm: 691
Fluorescence quantum yield: 0.21
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