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 the 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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sulfo-Cyanine7.5 azide

sulfo-Cyanine7.5 is a very hydrophilic and water-soluble dye for the near-infrared region. The absorption and emission spectra of the dye are similar to Indocyanine Green (ICG), but sulfo-Cyanine7.5 has a much higher fluorescence quantum yield. The dye is a great choice for near-infrared in vivo imaging. This is an azide for click chemistry.

sulfo-Cyanine5 azide

Water soluble sulfo-Cyanine5 fluorescent dye azide for 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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