Cyanine7 NHS ester

Cat. # Quantity Price Lead time
15020 1 mg $125 in stock
25020 5 mg $260 in stock
45020 25 mg $510 in stock
55020 50 mg $895 in stock
65020 100 mg $1490 in stock
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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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FAM azide, 5-isomer

FAM (fluorescein) azide for сlick chemistry labeling, pure 5-isomer.

General properties

Appearance: dark green solid
Molecular weight: 733.64
CAS number: 2408482-09-5
Molecular formula: C41H48N3BF4O4
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/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. Ehrman, R.N.; Brohlin, O.R.; Wijesundara, Y.H.; Kumari, S.; Trashi, O.; Howlett, T.S.; Trashi, I.; Herbert, F.C.; Raja, A.; Koirala, S.; Tran, N.; Al-Kharji, N.M.; Tang, W.; Senarathna, M.C.; Hagge, L.M.; Smaldone, R.A.; Gassensmith, J.J. A scalable synthesis of adjuvanting antigen depots based on metal–organic frameworks. Chemical Science, 2024, 15(8), 2731-2744. doi: 10.1039/d3sc06734c
  2. Huang, Y.; Wang, J.; Mancino, V.; Pham, J.; O’Grady, C.; Li, H.; Jiang, K.; Chin, D.; Poon, C.; Ho, P.-Y.; Gyarmati, G.; Peti-Peterdi, J.; Hallows, K.R.; Chung, E.J. Oral delivery of nanomedicine for genetic kidney disease. PNAS Nexus, 2024, 3(5), pgae187. doi: 10.1093/pnasnexus/pgae187
  3. Seo, H.S.; Han, J.-H.; Lim, J.; Bae, G.-H.; Byun, M.J.; Wang, C.-P.J.; Han, J.; Park, J.; Park, H.H.; Shin, M.; Park, T.-E.; Kim, T.-H.; Kim, S.-N.; Park, W.; Park, C.G. Enhanced Post-Surgical Cancer Treatment Using Methacrylated Glycol Chitosan Hydrogel for Sustained DNA/Doxorubicin Delivery and Immunotherapy. Biomaterials Research, 2024, 28, 0008. doi: 10.34133/bmr.0008
  4. Ehrman, R. N.; Brohlin, O. R.; Wijesundara, Y. H.; Kumari, S.; Trashi, I.; Trashi, O.; Howlett, T. S.; Herbert, F. C.; Raja, A.; Koirala, S.; Tran, N.; Al-Kharji, N. M.; Hagge, L. M.; Gassensmith, J. A Scalable Synthesis of Adjuvanting Antigen Depots Based on Met-al-Organic Frameworks. ChemRxiv, 2023, preprint. doi: 10.26434/chemrxiv-2023-gtl30
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