Cyanine7.5 NHS ester

Cyanine7.5 NHS esters Protein labeling Near infrared (NIR) imaging
Cat. # Quantity Price Lead time
16020 1 mg $125 in stock
26020 5 mg $260 in stock
46020 25 mg $510 in stock
56020 50 mg $895 in stock
66020 100 mg $1490 in stock
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Cyanine7.5 is a NIR dye with very long-wave emission. This product is amine-reactive derivative of this fluorophore.

Near infrared radiation readily penetrates tissues and can be used for imaging applications in vivo.

This product can be used for the labeling of various biomolecules containing amine groups, such as proteins and peptides, to track their distribution in organism in vivo by NIR imaging.

Increased rigidity of central polymethyne moiety allows to increase quantum yield by 20% compared to parent structure of Cy7.5® NHS.

Cyanine7.5 NHS ester
Cyanine7.5 NHS ester
Cyanine7.5 NHS ester
Cy7.5 NHS ester structure
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Cy7.5 absorbance and emission spectra

Cy7.5 absorbance and emission spectra

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General properties

Appearance: green powder
Mass spec M+ increment: 630.4
Molecular weight: 833.76
CAS number: 2708152-94-5
Molecular formula: C49H52N3BF4O4
IUPAC name: 1H-​Benz[e]​indolium, 2-​[2-​[3-​[2-​(1,​3-​dihydro-​1,​1,​3-​trimethyl-​2H-​benz[e]​indol-​2-​ylidene)​ethylidene]​-​1-​cyclohexen-​1-​yl]​ethenyl]​-​3-​[6-​[(2,​5-​dioxo-​1-​pyrrolidinyl)​oxy]​-​6-​oxohexyl]​-​1,​1-​dimethyl-
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: 788
ε, L⋅mol−1⋅cm−1: 223000
Emission maximum, nm: 808
Fluorescence quantum yield: 0.10

Product citations

  1. Xu, H.; Yu, P.; Bandari, R.P.; Smith, C.J.; Aro, M.R.; Singh, A.; Ma, L. Bimodal MRI/Fluorescence Nanoparticle Imaging Contrast Agent Targeting Prostate Cancer. Nanomaterials, 2024, 14(14), 1177. doi: 10.3390/nano14141177
  2. Chang, C.; Liu, H.; Li, X.; Song, D.; Liu, Y.; Lu, C.; Zhen, Y.; Chen, Y.; Xu, J.; Li, W.; Jia, X.; Chen, Z.; Chen, R. Combined ROS Responsive Polydopamine-Coated Berberine Nanoparticles Effective Against Ulcerative Colitis in Mouse Model. International Journal of Nanomedicine, 2024, 19, 1205-1224. doi: 10.2147/ijn.s442761
  3. Nie, Q.; Li, C.; Wang, Y.; Hu, Y.; Pu, W.; Zhang, Q.; Cai, J.; Lin, Y.; Li, G.; Wang, C.; Li, L.; Dou, Y.; Zhang, J. Pathologically Triggered in Situ Aggregation of Nanoparticles for Inflammation-Targeting Amplification and Therapeutic Potentiation. Acta Pharmaceutica Sinica B, 2023, 13(1), 390–409. doi: 10.1016/j.apsb.2022.07.013
  4. 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
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Cy® is a trademark of GE Healthcare.
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