Cyanine5 carboxylic acid

Cyanine5 Carboxylic acids
Cat. # Quantity Price Lead time
13090 1 mg $110.00 in stock
23090 5 mg $210.00 in stock
43090 25 mg $410.00 in stock
53090 50 mg $695.00 in stock
63090 100 mg $1190.00 in stock
Bulk inquiry

Non-activated carboxylic acid, an analog of Cy5® free carboxylic acid. Contains Cyanine5 fluorophore.

This dye has limited water solubility, but can be dissolved in mixtures of water with organic phase (DMF, DMSO, alcohols) to obtain useful concentrations of the material in solution. Water-soluble version is available.

This molecule can be considered non-reactive dye for the use in control samples, and for instrument calibration. For coupling with amines and protein labeling, consider using Cyanine5 NHS ester, or water-soluble sulfo-Cyanine5 NHS ester.

Cyanine5 free carboxylic acid structure
Download in
ChemDraw format

Cyanine5 absorbance and emission spectra

Cyanine5 absorbance and emission spectra

Customers also purchased with this product

Sulfo-Cyanine5.5 carboxylic acid

Water soluble far red fluorescent dye sulfo-Cyanine5.5, free non-activated carboxylic acid. Useful for the calibration, and as a non-reactive control.
Add this product to your cart and
get free express delivery

Cyanine7 maleimide

Cyanine7 maleimide is a sulfhydryl-reactive NIR dye.

Sulfo-Cyanine3 NHS ester

Water soluble sulfo-Cyanine3 SE activated ester for amino-biomolecule labeling.

General properties

Appearance: dark blue powder
Molecular weight: 519.12
CAS number: 1032678-07-1 (chloride), 195867-59-5 (inner salt), 766503-38-2 (without anion)
Molecular formula: C32H39ClN2O2
IUPAC name: 3H-​Indolium, 2-​[5-​[1-​(5-​carboxypentyl)​-​1,​3-​dihydro-​3,​3-​dimethyl-​2H-​indol-​2-​ylidene]​-​1,​3-​pentadien-​1-​yl]​-​1,​3,​3-​trimethyl-​, chloride
Solubility: soluble in organic solvents (DMF, DMSO, dichloromethane), very poorly soluble in water (0.25 mM, 130 mg/L)
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 maximum, nm: 646
ε, L⋅mol−1⋅cm−1: 250000
Emission maximum, nm: 662
Fluorescence quantum yield: 0.2
CF260: 0.03
CF280: 0.04

Product citations

  1. Santra, K.; Clark, K.D.; Maity, N.; Petrich, J.W.; Anderson, J.L. Exploiting Fluorescence Spectroscopy to Identify Magnetic Ionic Liquids Suitable for the Isolation of Oligonucleotides. The Journal of Physical Chemistry B, 2018, 122(31), 7747–7756. doi: 10.1021/acs.jpcb.8b05580
  2. Semkina, A.S.; Abakumov, M.A.; Skorikov, A.S.; Abakumova, T.O.; Melnikov, P.A.; Grinenko, N.F.; Cherepanov, S.A.; Vishnevskiy, D.A.; Naumenko, V.A.; Ionova, K.P.; Majouga, A.G.; Chekhonin, V.P. Multimodal doxorubicin loaded magnetic nanoparticles for {VEGF} targeted theranostics of breast cancer. Nanomedicine: Nanotechnology, Biology and Medicine, 2018, 14(5), 1733–1742. doi: 10.1016/j.nano.2018.04.019
  3. Kwok, S.J.J.; Choi, M.; Bhayana, B.; Zhang, X.; Ran, C.; Yun, S.-H. Two-photon excited photoconversion of cyanine-based dyes. Scientific Reports, 2016, 6, 23866. doi: 10.1038/srep23866
  4. Gupta, A.; Verma, N.C.; Khan, S.; Tiwari, S.; Chaudhary, A.; Nandi, C.K. Paper strip based and live cell ultrasensitive lead sensor using carbon dots synthesized from biological media. Sensors and Actuators B: Chemical, 2016, 232, 107–114. doi: 10.1016/j.snb.2016.03.110
Show more (2)
Cy® is a trademark of GE Healthcare.
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.