Cyanine5.5 NHS ester

Cat. # Quantity Price Stock

Stock items are shipped either today (for orders placed by 11AM EST), or tomorrow. Backordered items are typically shipped within 10 days.

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17020 1 mg 110.00$ in stock
27020 5 mg 210.00$ in stock
47020 25 mg 410.00$ in stock
57020 50 mg 695.00$ in stock
67020 100 mg 1190.00$ in stock

Cyanine5.5 NHS ester is a reactive dye for the labeling of amino-groups in peptides, proteins, and oligonucleotides, an analog of Cy5.5® NHS ester.

Cy5.5 is a far-red (and near-infrared) emitting dye which is ideal for fluorescence measurements where background fluorescence is a concern. It is also suitable for in vivo NIR imaging experiments.

This reagent can replace NHS esters of Cy5.5®, Alexa Fluor 680, and DyLight 680.

Cy5.5 absorbance and emission spectra

General properties

Appearance: dark blue powder
Molecular weight: 716.31
Molecular formula: C44H46ClN3O4
Solubility: soluble in organic solvents (DMSO, DMF, dichloromethane), low solubility in water
Quality control: NMR 1H (95%) and 13C, TLC, functional testing
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. Desiccate.
MSDS: Download

Spectral properties

Excitation maximum, nm: 673
Extinction coefficient at excitation maximum, Lmol-1cm-1: 209000
Emission maximum, nm: 707
Fluorescence quantum yield: 0.2
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