Sulfo-Cyanine3.5 azide

Cat. # Quantity Price Lead time
A2330 1 mg $110.00 in stock
B2330 5 mg $290.00 in stock
C2330 10 mg $470.00 in stock
D2330 25 mg $690.00 in stock
E2330 50 mg $1270.00 in stock
F2330 100 mg $1990.00 in stock

Sulfo-Cyanine3.5 is a fluorescent dye with absorption and emission spectra between those of Cyanine3 and Cyanine5. Because of its spectral characteristics, this fluorophore is widely used in BRET and FRET experiments both as a pair donor and acceptor.

Sulfo-Cyanine3.5 is a sulfonated derivative of Cyanine3.5 dye because it contains four additional sulfo groups, which ensures high water solubility of the dye and its conjugates. This allows working with this reagent in aqueous solutions without adding organic solvents.

This reagent is an azide derivative of sulfo-Cyanine3.5 dye for Click Chemistry reactions. The azide group allows conjugating the fluorophore with molecules containing alkyne or cycloalkyne groups, including various biomolecules, small molecules, and polymers, using copper-catalyzed Click chemistry and copper-free spAAC reaction.

Absorption and emission spectra of sulfo-Cyanine3.5

Absorption and emission spectra of sulfo-Cyanine3.5

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Sulfo-Cyanine5.5 azide

Sulfo-Cyanine5.5 azide is a derivative of water soluble far red emitting fluorescent cyanine dye. The azide group can be conjugated by either copper-catalyzed or copper free Click chemistry. The reagent possesses high aqueous solubility and hydrophilicity, and recommended for the labeling of biomolecules in aqueous environment.

General properties

Appearance: dark colored solid
Mass spec M+ increment: 959.2
Molecular weight: 1073.37
Molecular formula: C41H43N6K3O13S4
Solubility: good in water, DMF, DMSO
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.
MSDS: Download
Product specifications

Spectral properties

Excitation/absorption maximum, nm: 576
ε, L⋅mol−1⋅cm−1: 139000
Emission maximum, nm: 603
Fluorescence quantum yield: 0.11
CF260: 0.16
CF280: 0.17
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