Cyanine5.5 hydrazide

Cat. # Quantity Price Lead time
17070 1 mg $110.00 in stock
27070 5 mg $210.00 in stock
47070 25 mg $410.00 in stock
57070 50 mg $695.00 in stock
67070 100 mg $1190.00 in stock

Cyanine5.5 hydrazide is a carbonyl-reactive near infrared dye. Hydrazides quickly react with carbonyl compounds, such as aldehydes and ketones, and form stable hydrazones. This reaction is useful for the preparation of labeled conjugates.

Carbonyl groups in biomolecules can form spontaneously after oxidative stress or deamination of proteins. Alternatively, aldehyde groups can be specifically generated by periodate oxidation of sugar residues of glycoproteins, for example antibodies. Antibodies can be oxidized by sodium periodate and labeled with Cyanine5.5 hydrazide to form Cyanine5.5 labeled antibodies. Since sugar residues in antibodies are located far from variable, epitope-binding site, this method is particularly good for the labeling of antibodies.

Cyanine5.5 is a near infrared fluorophore, an analog of Cy5.5®. It is particularly suitable for the applications which require low fluorescence background. The absorption and emission wavelength of the dye exhibit significant tissue penetration, so Cyanine5.5 is suitable for in vivo NIR imaging applications.

Cyanine5.5 absorbance and emission spectra

Cyanine5.5 absorbance and emission spectra

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Sulfo-Cyanine5.5 carboxylic acid

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General properties

Appearance: dark blue powder
Molecular weight: 669.73
CAS number: 2280971-80-2 (without anion)
Molecular formula: C40H46Cl2N4O
Solubility: practically insoluble in water (< 2 uM), good in polar organic solvents (DMF, DMSO, alcohols)
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 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. Machado, Y.; Duinkerken, S.; Hoepflinger, V.; Mayr, M.; Korotchenko, E.; Kurtaj, A.; Pablos, I.; Steiner, M.; Stoecklinger, A.; Lübbers, J.; Schmid, M.; Ritter, U.; Scheiblhofer, S.; Ablinger, M.; Wally, V.; Hochmann, S.; Raninger, A.M.; Strunk, D.; van Kooyk, Y.; Thalhamer, J.; Weiss, R. Synergistic effects of dendritic cell targeting and laser-microporation on enhancing epicutaneous skin vaccination efficacy. Journal of Controlled Release, 2017, 266, 87–99. doi: 10.1016/j.jconrel.2017.09.020
  2. Zhao, Y.; Wang, Y.; Ran, F.; Cui, Y.; Liu, C.; Zhao, Q.; Gao, Y.; Wang, D.; Wang, S. A comparison between sphere and rod nanoparticles regarding their in vivo biological behavior and pharmacokinetics. Scientific Reports, 2017, 7, 4131. doi: 10.1038/s41598-017-03834-2
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