Cyanine5.5 maleimide

Cat. # Quantity Price Lead time
17080 1 mg $110.00 in stock
27080 5 mg $210.00 in stock
47080 25 mg $410.00 5 days
57080 50 mg $695.00 in stock
67080 100 mg $1190.00 in stock

Cyanine5.5 maleimide is a thiol reactive dye which is capable of selective labeling of sulfhydryl groups in proteins, an analog of Cy5.5® maleimide.

Near infrared emission of Cyanine5.5 makes this dye suitable for bioimaging applications.

Cyanine5.5 can replace Cy5.5® and DyLight 680.

Cy5.5 absorbance and emission spectra

Cy5.5 absorbance and emission spectra

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Cyanine5.5 DBCO

Cyanine5.5 is a far-red / NIR emitting dye that is useful for bioimaging studies. Cyanine5.5 DBCO is a derivative of the dye with a cycloalkyne moiety for copper-free click chemistry.
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Coumarin 343 X azide

Coumarin 343 is a blue emitting fluorophore that can serve as a FRET donor for fluorescein (FAM). This azide derivative can be conjugated with alkynes by Click chemistry. An extended linker arm between the fluorophore and the azide group enhances solubility, and provides spatial separation between the dye and the biomolecule.

FAM amine, 6-isomer

Amine derivative of fluorescein (FAM) fluorophore, pure 6-isomer, for the enzymatic transamination labeling, reactions with electrophilic reagents, and reductive amination.

General properties

Appearance: dark blue powder
Molecular weight: 741.36
CAS number: 1593644-50-8
Molecular formula: C46H49ClN4O3
IUPAC name: 1H-​Benz[e]​indolium, 2-​[5-​[3-​[6-​[[2-​(2,​5-​dihydro-​2,​5-​dioxo-​1H-​pyrrol-​1-​yl)​ethyl]​amino]​-​6-​oxohexyl]​-​1,​3-​dihydro-​1,​1-​dimethyl-​2H-​benz[e]​indol-​2-​ylidene]​-​1,​3-​pentadien-​1-​yl]​-​1,​1,​3-​trimethyl-
Solubility: soluble in organic solvents (DMSO, DMF, dichloromethane), practically insoluble in water (< 1 uM, < 1 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: 684
ε, L⋅mol−1⋅cm−1: 198000
Emission maximum, nm: 710
Fluorescence quantum yield: 0.2
CF260: 0.07
CF280: 0.03

Product citations

  1. Cooley, M.B.; Abenojar, E.C.; Wegierak, D.; Gupta, A.S.; Kolios, M.C.; Exner, A.A. Characterization of the Interaction of Nanobubble Ultrasound Contrast Agents with Human Blood Components. bioRxiv, preprint. doi: 10.1101/2022.02.11.480110
  2. Galstyan, A.; Chiechi, A.; Korman, A.J.; Sun, T.; Isreal, L.L.; Braubach, O.; Patil, R.; Shatalova, E.; Ljubimov, V.A.; Markman, J.; Grodzinski, Z.; Black, K.L.; Penichet, M.L.; Holler, E.; Ljubimov, A.V.; Ding, H.; Ljubimova, J.Y. Nano immunoconjugates crossing blood-brain barrier activate local brain tumor immune system for glioma treatment. bioRxiv, preprint. doi: 10.1101/466508
  3. Özcan, A.; Krajeski, R.; Ioannidi, E.; Lee, B.; Gardner, A.; Makarova, K.S.; Koonin, E.V.; Abudayyeh, O.O.; Gootenberg, J.S. Programmable RNA targeting with the single-protein CRISPR effector Cas7-11. Nature, 2021, 597(7878), 720–725. doi: 10.1038/s41586-021-03886-5
  4. Gardinier, T.C.; Turker, M.Z.; Hinckley, J.A.; Katt, W.P.; DomNwachukwu, N.; Woodruff, F.; Hersh, J.; Wang, J.; Cerione, R.A.; Wiesner, U.B. Controlling Surface Chemical Heterogeneities of Ultrasmall Fluorescent Core–Shell Silica Nanoparticles as Revealed by High-Performance Liquid Chromatography. The Journal of Physical Chemistry C, 2019, 123(37), 23246–23254. doi: 10.1021/acs.jpcc.9b06905
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