Cyanine5.5 maleimide

Cat. # Quantity Price Lead time
17080 1 mg $125 in stock
27080 5 mg $260 in stock
47080 25 mg $510 in stock
57080 50 mg $895 in stock
67080 100 mg $1490 in stock
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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.

Cyanine5.5 absorbance and emission spectra

Cyanine5.5 absorbance and emission spectra

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General properties

Appearance: dark blue powder
Molecular weight: 850.89
CAS number: 1593644-50-8
Molecular formula: C46H49F6N4O3P
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. Huang, S.; Gao, Y.; Ma, L.; Jia, B.; Zhao, W.; Yao, Y.; Li, W.; Lin, T.; Wang, R.; Song, J.; Zhang, W. Design of pH-responsive antimicrobial peptide melittin analog-camptothecin conjugates for tumor therapy. Asian Journal of Pharmaceutical Sciences, 2024, 19(1), 100890. doi: 10.1016/j.ajps.2024.100890
  2. Prabhakar, A.; Pavlov, M. Y.; Zhang, J.; Indrisiunaite, G.; Wang, J.; Lawson, M. R.; Ehrenberg, M.; Puglisi, J. D. Dynamics of Release Factor Recycling during Translation Termination in Bacteria. Nucleic Acids Research, 2023, 52(11), 5774–5790. doi: 10.1093/nar/gkad286
  3. De Rosa, L.; Hawala, I.; Di Stasi, R.; Stefania, R.; Capozza, M.; Nava, D.; D’Andrea, L. D. A Chemical Strategy for the Preparation of Multimodified Peptide Imaging Probes. J Org Chem, 2023, 88(7), 4546–4553. doi: 10.1021/acs.joc.3c00014
  4. Wilson, A.D.; Richards, M.A.; Curtis, M.K.; Gunadasa-Rohling, M.; Monterisi, S.; Loonat, A.A.; Miller, J.J.; Ball, V.; Lewis, A.; Tyler, D.J.; Moshnikova, A.; Andreev, O.A.; Reshetnyak, Y.K.; Carr, C.; Swietach, P. Acidic environments trigger intracellular H + -sensing FAK proteins to re-balance sarcolemmal acid–base transporters and auto-regulate cardiomyocyte pH. Cardiovascular Research, 2022, 118(14), 2946-2959. doi: 10.1093/cvr/cvab364
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