Sulfo-Cyanine5 NHS ester
Cat. # | Quantity | Price | Lead time | Buy this product |
---|---|---|---|---|
13320 | 1 mg | $110.00 | in stock | |
23320 | 5 mg | $210.00 | in stock | |
43320 | 25 mg |
$410.00
|
in stock | |
53320 | 50 mg |
$695.00
|
in stock | |
63320 | 100 mg |
$1190.00
|
in stock |
Water soluble Cyanine 5 succinimidyl ester (SE), an equivalent of Cy5® NHS ester, for the labeling of various amine-containing molecules in aqueous phase without use of any organic co-solvent. This product is therefore particularly useful for the labeling of proteins which denature in the presence of organic co-solvents, as well as for proteins with low solubility.
Sulfo-Cyanine 5 is an analog of Cy5®, one of the most popular fluorophores which is compatible with various equipment such as plate readers, microscopes, and imagers.
This dye is highly hydrophilic and water-soluble. A non-sulfonated analog is also available.
Can be used as a replacement for Cy5®, Alexa Fluor 647, DyLight 649 for all applications.
Sulfo-Cyanine 5 absorbance and emission spectra

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Alkyne maleimide
Maleimide reagent for the attachment of alkyne functional group to proteins, peptides, and other molecules bearing SH (thiol) groups, including cysteine residues.Sulfo-Cyanine5.5 maleimide
Sulfo-Cyanine5.5 is a water-soluble far red emitting dye. This is a thiol reactive maleimide derivative of sulfo-Cyanine5.5. It is recommended for the labeling of sensitive proteins.General properties
Appearance: | dark blue powder |
Molecular weight: | 777.95 |
CAS number: | 2230212-27-6 |
Molecular formula: | C36H40N3KO10S2 |
Solubility: | very good in water, good in DMF and DMSO |
Quality control: | NMR 1H, 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 |
Product specifications |
Spectral properties
Excitation maximum, nm: | 646 |
ε, L⋅mol−1⋅cm−1: | 271000 |
Emission maximum, nm: | 662 |
Fluorescence quantum yield: | 0.28 |
CF260: | 0.04 |
CF280: | 0.04 |
Product citations
- Geng, H.; Zhou, M.; Li, B.; Liu, L.; Yang, X.; Wen, Y.; Yu, H.; Wang, H.; Chen, J.; Chen, L. Metal-drug nanoparticles-mediated osteolytic microenvironment regulation for enhanced radiotherapy of orthotopic osteosarcoma. Chemical Engineering Journal, in press. doi: 10.1016/j.cej.2020.128103
- Mohammad-Beigi, H.; Hayashi, Y.; Zeuthen, C.M.; Eskandari, H.; Scavenius, C.; Juul-Madsen, K.; Vorup-Jensen, T.; Enghild, J.J.; Sutherland, D.S. Mapping and identification of soft corona proteins at nanoparticles and their impact on cellular association. bioRxiv, preprint. doi: 10.1101/2020.02.05.924480
- Irwin, N.A.T.; Pittis, A.A.; Mathur, V.; Howe, L.J.; Keeling, P.J.; Lynn, D.H.; Bourland, W.A. The Function and Evolution of Motile DNA Replication Systems in Ciliates. Current Biology, 2021, 31(1), 66–76.e6. doi: 10.1016/j.cub.2020.09.077
- Ye, R.; Xu, H.; Gu, J.; Chen, H. Bioinspired synthesis of protein-posnjakite organic-inorganic nanobiohybrid for biosensing applications. Analytica Chimica Acta, 2021, 1143, 31–36. doi: 10.1016/j.aca.2020.11.026
