sulfo-Cyanine7 NHS ester
Cat. # | Quantity | Price | Lead time | Buy this product |
---|---|---|---|---|
15320 | 1 mg | $125.00 | in stock | |
25320 | 5 mg | $325.00 | in stock | |
45320 | 25 mg |
$850.00
|
in stock | |
55320 | 50 mg |
$1490.00
|
in stock | |
65320 | 100 mg |
$1990.00
|
in stock |
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

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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.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
- 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
- Sandberg, E.; Piguet, J.; Kostiv, U.; Baryshnikov, G.; Liu, H.; Widengren, J. Photoisomerization of Heptamethine Cyanine Dyes Results in Red-Emissive Species: Implications for Near-IR, Single-Molecule, and Super-Resolution Fluorescence Spectroscopy and Imaging. J Phys Chem B, 2023, 127(14), 3208–3222. doi: 10.1021/acs.jpcb.2c08016
- White, M. J.; Raczy, M. M.; Budina, E.; Yuba, E.; Solanki, A.; Shim, H.-N.; Zhang, Z. J.; Gray, L. T.; Cao, S.; Alpar, A. T.; Hubbell, J. A. Engineered Collagen-Targeting Therapeutics Reverse Lung and Kidney Fibrosis in Mice. bioRxiv, 2022, preprint. doi: 10.1101/2022.01.04.474747
- Kang, Y.; Nack, L.M.; Liu, Yang and.; Qi, B.; Huang, Y.; Liu, Z.; Chakraborty, I.; Schulz, F.; Ahmed, A.A.A.; Poveda, M.C.; Hafizi, F.; Roy, S.; Mutas, M.; Holzapfel, M.; Sanchez-Cano, C.; Wegner, K.D.; Feliu, N.; Parak, W.J. Quantitative considerations about the size dependence of cellular entry and excretion of colloidal nanoparticles for different cell types. ChemTexts, 2022, 8(1), 9. doi: 10.1007/s40828-021-00159-6
