Cyanine7 hydrazide

Cat. # Quantity Price Lead time
15070 1 mg $125 in stock
25070 5 mg $260 in stock
45070 25 mg $510 in stock
55070 50 mg $895 in stock
65070 100 mg $1490 in stock
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Hydrazide derivative of Cyanine7, a NIR fluorescent dye, an analog of Cy7®.

This variety of heptamethine fluorophore contains a six-membered ring rigidizing the polymethine chain which allows to increase quantum yield by 20% compared to parent structure.

Hydrazide reacts quickly and smoothly with aldehydes and ketones yielding stable hydrazone products. This reaction is also good for the labeling of glycoproteins after periodate oxidation.

Cyanine7 absorbance and emission spectra

Cyanine7 absorbance and emission spectra

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General properties

Appearance: green powder
Mass spec M+ increment: 544.8
Molecular weight: 635.70
CAS number: 2183440-61-9 (without anion)
Molecular formula: C37H48Cl2N4O
Solubility: moderate solubility in water, 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/absorption maximum, nm: 750
ε, L⋅mol−1⋅cm−1: 199000
Emission maximum, nm: 773
Fluorescence quantum yield: 0.3
CF260: 0.022
CF280: 0.029

Product citations

  1. Shik, A. V.; Sobolev, P. V.; Zubritskaya, Y. V.; Baytler, M. O.; Stepanova, I. A.; Chernyaev, A. P.; Borschegovskaya, P. Yu.; Zolotov, S. A.; Doroshenko, I. A.; Podrugina, T. A.; Bliznyuk, U. A.; Rodin, I. A.; Beklemishev, M. K. Rapid Testing of Irradiation Dose in Beef and Potatoes by Reaction-Based Optical Sensing Technique. Journal of Food Composition and Analysis, 2024, 127, 105946. doi: 10.1016/j.jfca.2023.105946
  2. Pypin, A.A.; Shik, A.V.; Stepanova, I.A.; Doroshenko, I.A.; Podrugina, T.A.; Beklemishev, M.K. A Reaction-Based Optical Fingerprinting Strategy for the Recognition of Fat-Soluble Samples: Discrimination of Motor Oils. Sensors, 2023, 23(18), 7682. doi: 10.3390/s23187682
  3. Lix, K.; Krause, K.D.; Kim, H.; Algar, W.R. Investigation of the Energy Transfer Mechanism Between Semiconducting Polymer Dots and Organic Dyes. Journal of Physical Chemistry C, 2020, 124(31), 17387–17400. doi: 10.1021/acs.jpcc.0c04983
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