Sulfo-Cyanine5 NHS ester

Cat. # Quantity Price Lead time
13320 1 mg $110.00 in stock
23320 5 mg $290.00 in stock
43320 25 mg $690.00 in stock
53320 50 mg $1270.00 in stock
63320 100 mg $1990.00 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

Sulfo-Cyanine 5 absorbance and emission spectra

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General properties

Appearance: dark blue powder
Molecular weight: 777.95
CAS number: 2230212-27-6 (potassium salt); 937739-58-7 (inner salt)
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

  1. Wang, J.; Wang, Z.; Yu, J.; Zhang, Y.; Zeng, Y.; Gu, Z. A forskolin-conjugated insulin analog targeting endogenous glucose-transporter for glucose-responsive insulin delivery. Biomaterials Science, in press. doi: 10.1039/c9bm01283d
  2. Zhou, L.; Wu, Y.; Luo, Y.; Li, H.; Meng, X.; Liu, Cl; Xiang, J.; Zhang, P.; Gong, P.; Cai, L. Mitochondria-localized Self-reporting Small Molecule Decorated Theranostic Agents for Cancer-organelle Transporting and Imaging. ACS Applied Bio Materials, in press. doi: 10.1021/acsabm.9b00811
  3. Sameshima, T.; Yukawa, T.; Hirozane, Y.; Yoshikawa, M.; Katoh, T.; Hara, H.; Yogo, T.; Miyahisa, I.; Okuda, T.; Miyamoto, M.; Naven, R. Small-scale panel comprising diverse gene family targets to evaluate compound promiscuity. Chemical Research in Toxicology, in press. doi: 10.1021/acs.chemrestox.9b00128
  4. Gapizov, S.Sh.; Petrovskaya, L.E.; Shingarova, L.N.; Kryukova, E.A.; Boldyreva, E.F.; Lukashev, E.P.; Yakimov, S.A.; Svirshchevskaya, E.V.; Dolgikh, D.A.; Kirpichnikov, M.P. Fusion with an albumin-binding domain improves pharmacokinetics of an αvβ3-integrin binding fibronectin scaffold protein. Biotechnology and Applied Biochemistry, 2019, 66(4), 617–625. doi: 10.1002/bab.1762
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