Cyanine5.5 carboxylic acid

Cat. # Quantity Price Lead time
17090 1 mg $110.00 in stock
27090 5 mg $210.00 in stock
47090 25 mg $410.00 in stock
57090 50 mg $695.00 in stock
67090 100 mg $1190.00 in stock

Cyanine5.5 dye, free acid form, unactivated. The dye can be considered non-reactive for most applications. It can be used as a control or reference sample, and for instrument calibration.

Pre-activated NHS ester for the labeling of amine groups is also available.

Cy5.5 absorbance and emission spectra

Cy5.5 absorbance and emission spectra

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General properties

Appearance: dark blue powder
Molecular weight: 619.23
CAS number: 1449661-34-0 (without anion), 1449612-07-0 (inner salt)
Molecular formula: C40H43ClN2O2
IUPAC name: 1H-​Benz[e]​indolium, 2-​[5-​[3-​(5-​carboxypentyl)​-​1,​3-​dihydro-​1,​1-​dimethyl-​2H-​benz[e]​indol-​2-​ylidene]​-​1,​3-​pentadien-​1-​yl]​-​1,​1,​3-​trimethyl-
Solubility: soluble in organic solvents (DMSO, DMF, dichloromethane), practically insoluble in water (< 1 uM, < 1 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: 684
ε, L⋅mol−1⋅cm−1: 198000
Emission maximum, nm: 710
Fluorescence quantum yield: 0.2
CF260: 0.07
CF280: 0.03

Product citations

  1. Zhao, C.; Liu, A.; Santamaria, C.M.; Shomorony, A.; Ji, T.; Wei, T.; Gordon, A.; Elofsson, H.; Mehta, M.; Yang, R.; Kohane, D.S. Polymer-tetrodotoxin conjugates to induce prolonged duration local anesthesia with minimal toxicity. Nature Communications, 2019, 10, 2566. doi: 10.1038/s41467-019-10296-9
  2. Ding, Y.; Liu, J.; Li, X.; Xu, L.; Li, C.; Ma, L.; Liu, J.; Ma, R.; An, Y.; Huang, F.; Liu, Y.; Shi, L. Rational design of drug delivery systems for potential programmable drug release and improved therapeutic effect. Materials Chemistry Frontiers, 2019, 3(6), 1159–1167. doi: 10.1039/c9qm00178f
  3. Islam, M.S.; Reineke, J.; Kaushik, R.S.; Woyengo, T.; Baride, A.; Alqahtani, M.S.; Perumal, O. Bioadhesive Food-Protein Nanoparticles as Pediatric Oral Drug Delivery system. ACS Applied Materials & Interfaces, 2019, 11(20), 18062–18073. doi: 10.1021/acsami.9b00152
  4. Yang, J.; Xu, J.; Gonzalez, R.; Lindner, T.; Kratochwil, C.; Miao, Y. 68Ga-DOTA-GGNle-CycMSHhex targets the melanocortin-1 receptor for melanoma imaging. Science Translational Medicine, 2018, 10(466), eaau4445. doi: 10.1126/scitranslmed.aau4445
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