sulfo-Cyanine5 NHS ester

Cat. # Quantity Price Lead time
13320 1 mg $91 in stock
23320 5 mg $119 in stock
43320 25 mg $345 in stock
53320 50 mg $557 in stock
63320 100 mg $890 in stock
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Water-soluble Cyanine5 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 that 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®, DyLight 649 for all applications.

sulfo-Cyanine5 absorbance and emission spectra

sulfo-Cyanine5 absorbance and emission spectra

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General properties

Appearance: dark blue powder
Molecular weight: 777.95
CAS number: 2230212-27-6; 146368-14-1 (N-Ethyl)
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/absorption 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

  1. Lebedeva, N.A.; Anarbaev, R.O.; Maltseva, E.A.; Sukhanova, M.V.; Rechkunova, N.I.; Lavrik, O.I. DNA Repair Protein XRCC1 Stimulates Activity of DNA Polymerase λ under Conditions of Microphase Separation. International Journal of Molecular Sciences, 2024, 25(13), 6927. doi: 10.3390/ijms25136927
  2. Martin-Alonso, C.; Tabrizi, S.; Xiong, K.; Blewett, T.; Sridhar, S.; Crnjac, A.; Patel, S.; An, Z.; Bekdemir, A.; Shea, D.; Wang, S.-T.; Rodriguez-Aponte, S.; Naranjo, C.A.; Rhoades, J.; Kirkpatrick, J.D.; Fleming, H.E.; Amini, A.P.; Golub, T.R.; Love, J.C.; Bhatia, S.N.; Adalsteinsson, V.A. Priming agents transiently reduce the clearance of cell-free DNA to improve liquid biopsies. Science, 2024, 383(6680), eadf2341. doi: 10.1126/science.adf2341
  3. Geng, T.; Paek, S.Y.; Leung, E.; Chamley, L.W.; Wu, Z. Comparing extracellular vesicles from four different cell origins for intracellular drug delivery to pancreatic cancer cells: Small or large vesicles?. Journal of drug delivery science and technology, 2024, 93, 105416. doi: 10.1016/j.jddst.2024.105416
  4. Stinson, B.M.; Carney, S.M.; Walter, J.C.; Loparo, J.J. Structural role for DNA Ligase IV in promoting the fidelity of non-homologous end joining. Nature Communications, 2024, 15, 1250. doi: 10.1038/s41467-024-45553-z
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