Cyanine7 NHS ester

Cat. # Quantity Price Lead time
15020 1 mg $110.00 in stock
25020 5 mg $210.00 in stock
45020 25 mg $410.00 in stock
55020 50 mg $695.00 in stock
65020 100 mg $1190.00 in stock

Amine reactive Cyanine7, near infrared fluorescent dye, an improved analog of Cy7®.

NIR fluorophores can be used to take advantage of near infrared window of biological tissues - increased transparency of tissues in this spectral region allows to carry out in vivo imaging.

This reagent can be utilized to produce Cyanine7-labeled biomolecules for subsequent use in various in vivo research, and drug design related experiments.

The structure of Cyanine7 features rigidized design of central polymethyne chain. This molecular reinforcement allows to increase quantum yield by 20% compared with parent structure, increasing fluorescence brightness.

This reagent requires organic co-solvent for the labeling (please see Recommended Protocols section below). Water-soluble Cyanine7 NHS ester is also available, and recommended for protein NIR labeling.

Cy7 absorbance and emission spectra

Cy7 absorbance and emission spectra

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General properties

Appearance: dark green solid
Molecular weight: 733.64
CAS number: 1432019-64-1 (chloride), 1432466-81-3 (without anion)
Molecular formula: C41H48N3BF4O4
IUPAC name: 1‐{6‐[(2,5‐dioxopyrrolidin‐1‐yl)oxy]‐6‐oxohexyl}‐ 3,3‐dimethyl‐2‐[(E)‐2‐[(3E)‐3‐{2‐[(2E)‐1,3,3‐ trimethyl‐2,3‐dihydro‐1H‐indol‐2‐ ylidene]ethylidene}cyclohex‐1‐en‐1‐yl]ethenyl]‐3H‐ indol‐1‐ium tetrafluoroborate
Solubility: soluble in organic solvents (DMSO, DMF, dichloromethane), low solubility in water
Quality control: NMR 1H, HPLC-MS (95%)
Storage conditions: Storage: 12 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: 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. Smith, W.J.; Wang, G.; Gaikwad, H.; Vu, V.P.; Groman, E.; Bourne, D.W.A.; Simberg, D. Accelerated Blood Clearance of Antibodies by Nanosized Click Antidotes. ACS Nano, 2018, 12(12), 12523–12532. doi: 10.1021/acsnano.8b07003
  2. Li, W.; Li, Y.; Liu, Z.; Kerdsakundee, N.; Zhang, M.; Zhang, F.; Liu, X.; Bauleth-Ramos, T.; Lian, W.; Mäkilä, E.; Kemell, M.; Ding, Y.; Sarmento, B.; Wiwattanapatapee, R.; Salonen, J.; Zhang, H.; Hirvonen, J.T.; Liu, D.; Deng, X.; Santos, H.A. Hierarchical structured and programmed vehicles deliver drugs locally to inflamed sites of intestine. Biomaterials, 2018, 185, 322–332. doi: 10.1016/j.biomaterials.2018.09.024
  3. Besford, Q.A.; Ju, Y.; Wang, T.-Y.; Yun, G.; Cherepanov, P.V.; Hagemeyer, C.E.; Cavalieri, F.; Caruso, F. Self-Assembled Metal-Phenolic Networks on Emulsions as Low-Fouling and pH-Responsive Particles. Small, 2018, 14(39), e1802342. doi: 10.1002/smll.201802342
  4. Etrych, T.; Daumová, L.; Pokorná, E.; Tušková, D.; Lidický, O.; Kolářová, V.; Pankrác, J.; Šefc, L.; Chytil, P.; Klener, P. Effective doxorubicin-based nano-therapeutics for simultaneous malignant lymphoma treatment and lymphoma growth imaging. Journal of Controlled Release, 2018, 289, 44–55. doi: 10.1016/j.jconrel.2018.09.018
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