Cyanine7 carboxylic acid

Cyanine7 Carboxylic acids Near infrared (NIR) imaging
Cat. # Quantity Price Lead time
15090 1 mg $125 in stock
25090 5 mg $260 in stock
45090 25 mg $510 in stock
55090 50 mg $895 in stock
65090 100 mg $1490 in stock
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The unactivated free carboxylic acid of near-infrared fluorescent dye Cyanine7. For coupling and labeling reactions also consider using pre-activated Cyanine7 NHS ester, or water-soluble sulfo-Cyanine7 NHS ester.

Cyanine7 carboxylic acid, 45090
Cyanine7 carboxylic acid, 45090
Cyanine7 carboxylic acid, 45090
Cyanine7 free carboxylic acid structure
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Cyanine7 absorbance and emission spectra

Cyanine7 absorbance and emission spectra

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Cyanine3 carboxylic acid

The free carboxylic acid of Cyanine3 dye. Non-sulfonated dye, with good solubility in organic solvents, and limited aqueous solubility.

General properties

Appearance: green powder
Molecular weight: 585.22
CAS number: 1628790-40-8 (chloride), 1628897-82-4 (without anion), 2241083-63-4 (inner salt)
Molecular formula: C37H45ClN2O2
IUPAC name: 3H-​Indolium, 2-​[2-​[3-​[2-​[1-​(5-​carboxypentyl)​-​1,​3-​dihydro-​3,​3-​dimethyl-​2H-​indol-​2-​ylidene]​ethylidene]​-​1-​cyclohexen-​1-​yl]​ethenyl]​-​1,​3,​3-​trimethyl-​, chloride
Solubility: soluble in organic solvents (DMSO, DMF, dichloromethane), low solubility in water
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
CF260: 0.022
CF280: 0.029

Product citations

  1. Li, Y.; Ji, T.; Torre, M.; Shao, R.; Zheng, Y.; Wang, D.; Li, X.; Liu, A.; Zhang, W.; Deng, X.; Yan, R.; Kohane, D.S. Aromatized liposomes for sustained drug delivery. Nature Communications, 2023, 14, 6659. doi: 10.1038/s41467-023-41946-8
  2. Matoori, S.; Mooney, D.J. Near-Infrared Fluorescence Hydrogen Peroxide Assay for Versatile Metabolite Biosensing in Whole Blood. Small, 2020, 16(20), 2000369. doi: 10.1002/smll.202000369
  3. Svenskaya, Y.I.; Genina, E.A.; Parakhonskiy, B.V.; Lengert, E.; Talnikova, E.E.; Terentyuk, G.S.; Utz, S.R.; Gorin, D.A.; Tuchin, V.V.; Sukhorukov, G. A simple non-invasive approach towards efficient transdermal drug delivery based on biodegradable particulate system. ACS Applied Materials & Interfaces, 2019, 11(19), 17270–17282. doi: 10.1021/acsami.9b04305
  4. Yang, C.; Liu, D.; Renny, A.; Kuttipillai, P.S.; Lunt, R.R. Integration of near-infrared harvesting transparent luminescent solar concentrators onto arbitrary surfaces. Journal of Luminescence, 2019, 210, 239–246. doi: 10.1016/j.jlumin.2019.02.042
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