sulfo-Cyanine3 maleimide
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 11380 | 1 mg |
$93.99
|
in stock | |
| 21380 | 5 mg |
$329.90
|
in stock | |
| 41380 | 25 mg |
$829.90
|
in stock | |
| 51380 | 50 mg |
$1299.00
|
in stock | |
| 61380 | 100 mg |
$2099.00
|
in stock |
sulfo-Cyanine3 maleimide is a water-soluble, thiol-reactive dye for labeling. This is an analog of Cy3® maleimide.
This product is recommended for labeling antibodies and other labile proteins in mild, purely aqueous conditions. The dye is water soluble and does not require organic co-solvent.
A non-sulfonated Cyanine3 maleimide is available.
Sulfo-Cyanine3 maleimide
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General properties
| Appearance: | red powder |
| Molecular weight: | 776.96 |
| CAS number: | 1656990-68-9 |
| Molecular formula: | C36H41KN4O9S2 |
| IUPAC name: | 3H-Indolium, 2-[3-[1-[6-[[2-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)ethyl]amino]-6-oxohexyl]-1,3-dihydro-3,3-dimethyl-5-sulfo-2H-indol-2-ylidene]-1-propen-1-yl]-1,3,3-trimethyl-5-sulfo-, inner salt, potassium salt |
| Solubility: | soluble in water (0.39 M = 30 g/L), DMF, DMSO |
| Quality control: | NMR 1H, HPLC-MS (95+%) |
| Storage conditions: | Storage: 24 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: | 548 |
| ε, L⋅mol−1⋅cm−1: | 162000 |
| Emission maximum, nm: | 563 |
| Fluorescence quantum yield: | 0.1 |
| CF260: | 0.03 |
| CF280: | 0.06 |
Product citations
- Liang, J.; Azubel, M.; Wang, G.; Nie, Y.; Kornberg, R. D.; Beel, A. J.; Mattei, P.-J. A Universal Method for the Purification of C2H2 Zinc Finger Arrays. PLOS ONE, 2025, 20(2), e0318295. doi: 10.1371/journal.pone.0318295
- Kartseva, M. E.; Kravchinskiy, D. M.; Morozov, V. N.; Staltsov, M. S.; Kuzmin, V. A.; Rudoy, V. M.; Dement’eva, O. V. Plasmonic Core/Shell Nanoparticles with Grafted Fluorophore: Synthesis and Emission Control. Optical Materials, 2025, 159, 116674. doi: 10.1016/j.optmat.2025.116674
- Hei, Y.; Wang, B.; He, Y.; Wang, W.; Xue, Y.; Chen, C. Photostability of Organic Fluorophore Influenced by Adjacent Amino Acid Residues. Commun Chem, 2025, 8(1), 262. doi: 10.1038/s42004-025-01661-5
- Damm, A.; Paik, S.-J.; Sadhu, R.K.; Di-Cicco, A.; Manzi, J.; Castellana, M.; Margeat, E.; Dahan, M.; Sens, P.; Lévy, D.; Bassereau, P. Mechanosensitivity of an ABC Membrane Transporter Revealed by Single Molecule FRET and Activity Measurement. bioRxiv, 2024, preprint. doi: 10.1101/2024.01.24.577054
Cy® is a trademark of GE Healthcare.
Short link - lumiprobe.com/sh/p/1O
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