Cyanine3.5 NHS ester

Cyanine3.5 NHS esters Protein labeling
Cat. # Quantity Price Lead time
12020 1 mg $125 in stock
22020 5 mg $260 in stock
42020 25 mg $510 in stock
52020 50 mg $895 in stock
62020 100 mg $1490 in stock
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Cyanine3.5 NHS ester (an analog of Cy3.5® NHS ester) is a reactive dye for the labeling of amino-groups in peptides, proteins, and oligonucleotides.

Cyanine3.5 NHS ester can replace NHS esters of Cy3.5®, DyLight 594.

Cyanine3.5 NHS ester, 12020
Cyanine3.5 NHS ester, 12020
Cyanine3.5 NHS ester, 12020
Structure of Cyanine3.5 NHS ester
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Cyanine3.5 NHS ester absorbance and emission spectra

Cyanine3.5 NHS ester absorbance and emission spectra

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Cyanine3 amine

Cyanine3 is an fluorophore with free amino group (amino-dye). It can be conjugated with NHS esters, carboxy groups (after activation), and epoxides.

General properties

Appearance: dark purple solid
Molecular weight: 741.62
CAS number: 2231670-85-0
Molecular formula: C42H44N3BF4O4
Solubility: soluble in organic solvents (DMF, DMSO, dichloromethane), insoluble in water
Quality control: NMR 1H and 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: 591
ε, L⋅mol−1⋅cm−1: 116000
Emission maximum, nm: 604
Fluorescence quantum yield: 0.35
CF260: 0.29
CF280: 0.22

Product citations

  1. Son, T.; Kim, M.; Choi, M.; Nam, S.H.; Yoo, A.; Lee, H.; Han, E.H.; Hong, K.S.; Park, H.S. Advancing fluorescence imaging: enhanced control of cyanine dye-doped silica nanoparticles. Journal of Nanobiotechnology, 2024, 22, 347. doi: 10.1186/s12951-024-02638-7
  2. Tang, M.; Chen, B.; Xia, H.; Pan, M.; Zhao, R.; Zhou, J.; Yin, Q.; Wan, F.; Yan, Y.; Fu, C.; Zhong, L.; Zhang, Q.; Wang, Y. pH-gated nanoparticles selectively regulate lysosomal function of tumour-associated macrophages for cancer immunotherapy. Nature Communications, 2023, 14, 5888. doi: 10.1038/s41467-023-41592-0
  3. Yin, Q.; Pan, A.; Chen, B.; Wang, Z.; Tang, M.; Yan, Y.; Wang, Y.; Xia, H.; Chen, W.; Du, H.; Chen, M.; Fu, C.; Wang, Y.; Yuan, X.; Lu, Z.; Zhang, Q.; Wang, Y. Quantitative Imaging of Intracellular Nanoparticle Exposure Enables Prediction of Nanotherapeutic Efficacy. Nat Commun, 2021, 12(1), 2385. doi: 10.1038/s41467-021-22678-z
  4. Lee, S.A.; Biteen, J.S. Spectral Reshaping of Single Dye Molecules Coupled to Single Plasmonic Nanoparticles. Journal of Physical Chemistry Letters, 2019, 10, 5764–5769. doi: 10.1021/acs.jpclett.9b02480
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Cy® is a trademark of Cytiva.
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