Cyanine5 maleimide
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 13080 | 1 mg | $125 | in stock | |
| 23080 | 5 mg | $260 | in stock | |
| 43080 | 25 mg |
$510
|
in stock | |
| 53080 | 50 mg |
$895
|
in stock | |
| 63080 | 100 mg |
$1490
|
in stock |
Cyanine5 maleimide is a mono-reactive dye which selectively couples with thiol groups (for example, with cysteines in peptides and proteins) to give labeled conjugates.
Cyanine5 is an analog of Cy5®, a common fluorophore which is compatible with various instrumentation like microscopes, imagers, and fluorescence readers.
For the labeling of antibodies and sensitive proteins we recommend to use the water soluble sulfo-Cyanine5 maleimide.
Cyanine5 excitation and emission spectra
Recommended protocol
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AF 343 (Coumarin)-X-NHS ester
AF 343 (Coumarin) is a blue emitting dye that can serve as a FRET donor for fluorescein (FAM). This structure features a linker between Coumarin 343 fluorophore, and the functional group. It provides better solubility, and spatial separation between the dye, and the functional group.Cyanine5 amine
Cyanine5 amine functionalized dye for the coupling with activated esters and epoxides.
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Cyanine3 carboxylic acid
The free carboxylic acid of Cyanine3 dye. Non-sulfonated dye, with good solubility in organic solvents, and limited aqueous solubility.General properties
| Appearance: | dark blue powder |
| Molecular weight: | 605.8 |
| CAS number: | 1437872-46-2 (without anion) |
| Molecular formula: | C38H45N4O3 |
| IUPAC name: | 3H-Indolium, 2-[5-[1-[6-[[2-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)ethyl]amino]-6-oxohexyl]-1,3-dihydro-3,3-dimethyl-2H-indol-2-ylidene]-1,3-pentadien-1-yl]-1,3,3-trimethyl- |
| Solubility: | soluble in organic solvents (DMF, DMSO, dichloromethane), practically insoluble in water (31 uM, 23 mg/L) |
| 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: | 646 |
| ε, L⋅mol−1⋅cm−1: | 250000 |
| Emission maximum, nm: | 662 |
| Fluorescence quantum yield: | 0.2 |
| CF260: | 0.03 |
| CF280: | 0.04 |
Product citations
- Uckelmann, M.; Levina, V.; Taveneau, C.; Han Ng, X.; Pandey, V.; Martinez, J.; Mendiratta, S.; Houx, J.; Boudes, M.; Venugopal, H.; Trépout, S.; Zhang, Q.; Flanigan, S.; Li, M.; Sierecki, E.; Gambin, Y.; Das, P.P.; Bell, O.; de Marco, A.; Davidovich, C. Dynamic PRC1-CBX8 stabilizes a porous structure of chromatin condensates. bioRxiv, 2024, preprint. doi: 10.1101/2023.05.08.539931
- Ernst, M.; Orabi, E.A.; Stockbridge, R.B.; Faraldo-Gómez, J.D.; Robertson, J.L. Dimerization mechanism of an inverted-topology ion channel in membranes. Proceedings of the National Academy of Sciences of the United States of America, 2024, 120(47), e2308454120. doi: 10.1073/pnas.2308454120
- Johnson, J.L.; Steele, J.H.; Lin, R.; Stepanov, V.G.; Gavriliuc, M.N.; Wang, Y. Multi-Channel smFRET study reveals a Compact conformation of EF-G on the Ribosome. bioRxiv, 2024, preprint. doi: 10.1101/2024.01.27.577133
- Huang, L.; Liu, P.; Du, Y.; Pan, D.; Lee, A.; Wolfe, S.A.; Wang, Y.-X. A brown fat-enriched adipokine, ASRA, is a leptin receptor antagonist that stimulates appetite. bioRxiv, 2023, preprint. doi: 10.1101/2023.09.12.557454
Cy® is a trademark of GE Healthcare.
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