Cyanine3 NHS ester

Cat. # Quantity Price Lead time
11020 1 mg 110.00$ in stock
21020 5 mg 210.00$ in stock
41020 25 mg 410.00$ in stock
51020 50 mg 695.00$ in stock
61020 100 mg 1190.00$ in stock

Cyanine3 NHS ester is a reactive dye for the labeling of amino-groups in biomolecules, an analog of Cy3® NHS ester. This reagent is ideal for the labeling of soluble proteins, peptides, and oligonucleotides/DNA. For delicate proteins consider using water-soluble sulfo-Cyanine3 NHS ester which does not require use of any co-solvent.

Cyanine3 NHS ester is a replacement for NHS esters of Cy3®, Alexa Fluor 546, and DyLight 549.

Cy3 absorbance and emission spectra

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Cyanine5.5 NHS ester

Cyanine5.5 NHS is far-red / near-infrared amine-reactive dye.

Cyanine7 NHS ester

Amine reactive NHS ester of near infrared dye Cyanine7.

General properties

Appearance: red powder
Mass spec M+ increment: 474.2
Molecular weight: 590.15
Molecular formula: C34H40ClN3O4
CAS number: 1032678-38-8, 1032815-92-1
Solubility: soluble in organic solvents (DMF, DMSO, dichloromethane), insoluble in water
Quality control: NMR 1H and HPLC-MS (95+%)
Storage conditions: Storage: 12 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

Spectral properties

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

Product citations

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  10. Graen, T.M.D.; Hoefling, M.; Grubmüller, H. AMBER-DYES: Characterization of Charge Fluctuations and Force Field Parameterization of Fluorescent Dyes for Molecular Dynamics Simulations. Journal of Chemical Theory and Computation, 2014, 10(12), 5505-5512. doi: 10.1021/ct500869p
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