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

Customers also purchased with this product

Sulfo-Cyanine5.5 amine

Sulfo-Cyanine5.5 is a far red/NIR fluorophore possessing high hydrophilicity and aqueous solubility. The dye displays good brightness in far red region due to outstanding molar extinction coefficient. This is amine derivative which is reactive towards electrophiles. It can also be used for enzymatic transamination labeling.

Cyanine5.5 DBCO

Cyanine5.5 is a far-red / NIR emitting dye that is useful for bioimaging studies. Cyanine5.5 DBCO is a derivative of the dye with a cycloalkyne moiety for Copper free Click chemistry.

Sulfo-Cyanine3 alkyne

A water soluble dye alkyne for copper-catalyzed Click Chemistry. The fluorophore Sulfo-Cyanine3 is a bright and photostable dye for the Cy3® channel.

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/absorption 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. Phung, C.D.; Le, T.G.; Nguyen, V.H.; Vu, T.T.; Nguyen, H.Q.; Kim, J.O.; Yong, C.S.; Nguyen, C.N. PEGylated-Paclitaxel and Dihydroartemisinin Nanoparticles for Simultaneously Delivering Paclitaxel and Dihydroartemisinin to Colorectal Cancer. Pharmaceutical Research, 2020, 37, 129. doi: 10.1007/s11095-020-02819-7
  2. Alfaifi, A.A.; Heyder, R.S.; Bielski, E.R.; Almuqbil, R.M.; Kavdia, M.; Gerk, P.M.; da Rocha, S.R.P. Megalin-targeting liposomes for placental drug delivery. Journal of Controlled Release, 2020, 324, 366–378. doi: 10.1016/j.jconrel.2020.05.033
  3. 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
  4. Joseph, M.K.; Islam, M.S.; Reineke, J.; Hildreth, M.; Woyengo, T.; Pillatzki, A.; Baride, A.; Perumal, O. Intraductal Drug Delivery to the Breast: Effect of Particle size and Formulation on Breast Duct and Lymph Node Retention. Molecular Pharmaceutics, 2020, 17(2), 441–452. doi: 10.1021/acs.molpharmaceut.9b00879
Show more (13)
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.