Cyanine5.5 NHS ester

Cat. # Quantity Price Lead time
17020 1 mg $110.00 in stock
27020 5 mg $210.00 in stock
47020 25 mg $410.00 in stock
57020 50 mg $695.00 in stock
67020 100 mg $1190.00 in stock

Cyanine5.5 NHS ester is a reactive dye for the labeling of amino-groups in peptides, proteins, and oligonucleotides, an analog of Cy5.5® NHS ester.

Cy5.5 is a far-red (and near-infrared) emitting dye which is ideal for fluorescence measurements where background fluorescence is a concern. It is also suitable for in vivo NIR imaging experiments.

This reagent can replace NHS esters of Cy5.5®, Alexa Fluor 680, and DyLight 680.

Cy5.5 absorbance and emission spectra

Cy5.5 absorbance and emission spectra

Customers also purchased with this product

Cyanine5 hydrazide

Cy5 hydrazide is a reactive dye for aldehydes and ketones. It can be used for the labeling of glycoproteins after periodate oxidation of sugar moieties.

PEP azide

PEP (phenylethynylpyrene), polyaromatic hydrocarbon fluorescent dye for Click-Chemistry labeling.

BDP TR alkyne

BDP TR is a fluorophore for Texas Red (ROX) channel. This borondipyrromethene dye is very bright, and resistant to oxidation.

General properties

Appearance: dark blue solid
Molecular weight: 767.66
CAS number: 1469277-96-0, 2054318-82-8 (chloride); 1469541-53-4, 1874250-60-8 (without anion)
Molecular formula: C44H46N3BF4O4
IUPAC name: 1H-​Benz[e]​indolium, 2-​[5-​(1,​3-​dihydro-​1,​1,​3-​trimethyl-​2H-​benz[e]​indol-​2-​ylidene)​-​1,​3-​pentadien-​1-​yl]​-​3-​[6-​[(2,​5-​dioxo-​1-​pyrrolidinyl)​oxy]​-​6-​oxohexyl]​-​1,​1-​dimethyl-
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: 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 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. Sharmah, A.; Kraus, M.; Cutler, S.; Siegel, J.B.; Brady, S.; Guo, T. Towards Development of Fluorescence Quenching-Based Biosensors for Drought Stress in Plants. Analytical Chemistry, in press. doi: 10.1021/acs.analchem.9b03751
  2. Beldman, T.J.; Malinova, T.S.; Desclos, E.; Grootemaat, A.E.; Misiak, A.L.S.; van der Velden, S.; van Roomen, C.P.A.A.; Beckers, L.; van Veen, H.A.; Krawczyk, P.M.; Hoebe, R.A.; Sluimer, J.C.; Neele, A.E.; de Winther, M.P.J.; van der Wel, N.N.; Lutgens, E.; Mulder, W.J.M.; Huveneers, S.; Kluza, E. Nanoparticle-Aided Characterization of Arterial Endothelial Architecture during Atherosclerosis Progression and Metabolic Therapy. ACS Nano, in press. doi: 10.1021/acsnano.8b08875
  3. Stokol, T.; Wan, C.; Blakely, R.; Bellat, V.; Law, B. Aldoxorubicin-loaded nanofibers are cytotoxic for canine mammary carcinoma and osteosarcoma cell lines in vitro: A short communication. Research in Veterinary Science, 2020, 128, 86–89. doi: 10.1016/j.rvsc.2019.11.003
  4. Hyun, H.; Yoo, Y.; Kim, S.Y.; Ko, H.S.; Chun, H.J.; Yang, D.H. Optimization of cRGDfK Ligand Concentration on Polymeric Nanoparticles to Maximize Cancer Targeting. Journal of Industrial and Engineering Chemistry, 2020, 81, 178–184. doi: 10.1016/j.jiec.2019.09.006
Show more (151)
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.