sulfo-Cyanine7 NHS ester

Cat. # Quantity Price Lead time
15320 1 mg $125 in stock
25320 5 mg $325 in stock
45320 25 mg $850 in stock
55320 50 mg $1490 in stock
65320 100 mg $1990 in stock
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Water-soluble near-infrared dye sulfo-Cyanine7, an amine-reactive succinimide ester.

sulfo-Cyanine7 is an improved analog of Cy7® fluorophore with quantum yield improved by 20%, and higher photostability. This fluorescent dye is especially useful for NIR imaging.

Near-infrared fluorescent imaging takes advantage of the transparency of biological tissues at a particular range of wavelengths. The method is non-destructive and allows to monitor of the distribution of various labeled molecules in live organisms.

sulfo-Cyanine7 NHS ester reagent allows to prepare sulfo-Cyanine7-labeled biomolecules, such as proteins, with ease. Dye-labeled molecules can be subsequently used for various research and drug design-related experiments.

This reagent has high water solubility and is especially useful for labeling delicate proteins and proteins prone to denaturation. Non-sulfonated Cyanine7 NHS ester soluble in the organic phase is also available.

sulfo-Cyanine7 absorbance and emission spectra

sulfo-Cyanine7 absorbance and emission spectra

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General properties

Appearance: dark green powder
Molecular weight: 844.05
CAS number: 1603861-95-5 (potassium salt); 1604244-45-2 (inner salt); 477908-53-5 (N-Ethyl)
Molecular formula: C41H46N3KO10S2
Solubility: good in water, DMF, 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: 750
ε, L⋅mol−1⋅cm−1: 240600
Emission maximum, nm: 773
Fluorescence quantum yield: 0.24
CF260: 0.04
CF280: 0.04

Product citations

  1. Zeng, Z.; Tan, R.; Chen, S.; Chen, H.; Liu, Z.; Liu, L.; Li, M.; Chen, Y. Di-PEGylated insulin: A long-acting insulin conjugate with superior safety in reducing hypoglycemic events. Acta Pharmaceutica Sinica B, 2024. doi: 10.1016/j.apsb.2024.02.022
  2. 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
  3. Niu, L.; Jang, E.; Chin, A.L.; Huo, Z.; Wang, W.; Cai, W.; Tong, R. Noncovalently particle-anchored cytokines with prolonged tumor retention safely elicit potent antitumor immunity. Science Advances, 2024, 10(16), eadk7695. doi: 10.1126/sciadv.adk7695
  4. Barberio, A. E.; Smith, S. G.; Pires, I. S.; Iyer, S.; Reinhardt, F.; Melo, M. B.; Suh, H.; Weinberg, R. A.; Irvine, D. J.; Hammond, P. T. Layer-by-Layer Interleukin-12 Nanoparticles Drive a Safe and Effective Response in Ovarian Tumors. Bioengineering & Translational Medicine, 2023, 8(2), e10453. doi: 10.1002/btm2.10453
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