Sulfo-Cyanine3 NHS ester
Cat. # | Quantity | Price | Lead time | Buy this product |
---|---|---|---|---|
11320 | 1 mg | $110.00 | in stock | |
21320 | 5 mg | $210.00 | in stock | |
41320 | 25 mg |
$410.00
|
in stock | |
51320 | 50 mg |
$695.00
|
in stock | |
61320 | 100 mg |
$1190.00
|
in stock |
Water soluble, amino-reactive sulfo-Cyanine3 NHS ester. Efficiently labels proteins and peptides in purely aqueous solution, without need for organic co-solvent. Ideal for proteins with low solubility, and proteins prone to denaturation.
This is sulfonated, hydrophilic and water-soluble dye. Non-sulfonated Cyanine3 NHS ester is also available.
This product is an analog of Cy3® NHS ester. Sulfo-Cyanine3 NHS ester replaces Cy3®, Alexa Fluor 546, and DyLight 549 for all applications.
Sulfo-Cyanine3 absorbance and emission spectra

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Sulfo-Cyanine3 DBCO is a cycloalkyne derivative of water soluble, general purpose fluorophore sulfo-Cyanine3 for Click Chemistry.General properties
Appearance: | dark red crystals |
Molecular weight: | 751.91 |
CAS number: | 1424150-38-8 (sodium salt); 1424433-17-9, 1518643-34-9 (inner salt) |
Molecular formula: | C34H38N3KO10S2 |
IUPAC name: | 3H-Indolium, 2-[3-(1,3-dihydro-1,3,3-trimethyl-5-sulfo-2H-indol-2-ylidene)-1-propen-1-yl]-1-[6-[(2,5-dioxo-1-pyrrolidinyl)oxy]-6-oxohexyl]-3,3-dimethyl-5-sulfo-, inner salt, sodium salt |
Solubility: | soluble in water (0.62 M = 47 g/L), in polar organic solvents (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 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
- Baker, Y.; Yuan, L.; Chen J.; Belle, R.; Carlisle, R.; El-Sagheer, A.; Brown, T. Expanding the Chemical Repertoire of DNA Nanomaterials Generated by Rolling Circle Amplification. ChemRxiv, preprint. doi: 10.26434/chemrxiv.12566963.v1
- Liu, Z.; Yuan, J.; Lasorella, A.; Iavarone, A.; Bruce, J.N.; Canoll, P.; Sims, P.A. Integrating single-cell RNA-seq and imaging with SCOPE-seq2. Scientific Reports, 2020, 10, 19482. doi: 10.1038/s41598-020-76599-w
- Binkley, M.; Cui, M.; Berezin, M.; Meacham, J.M. Antibody conjugate assembly on ultrasound-confined microcarrier particles. ACS Biomaterials Science & Engineering, 2020, 6(11), 6108–6116. doi: 10.1021/acsbiomaterials.0c01162
- Hong, K.; Song, D.; Jung, Y. Behavior control of membrane-less protein liquid condensates with metal ion-induced phase separation. Nature Communications, 2020, 11, 5554. doi: 10.1038/s41467-020-19391-8
