Cyanine5.5 NHS ester

NHS esters Cyanine5.5 Protein labeling
Cat. # Quantity Price Lead time
17020 1 mg $125 in stock
27020 5 mg $260 in stock
47020 25 mg $510 in stock
57020 50 mg $895 in stock
67020 100 mg $1490 in stock
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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® and DyLight 680.

Cyanine5.5 NHS ester
Cyanine5.5 NHS ester
Cy5.5 NHS ester structure
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Cy5.5 absorbance and emission spectra

Cy5.5 absorbance and emission spectra

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Rhodamine 6G is a xanthene dye that has been used for DNA sequencing and qPCR. This azide derivative is used for the attachment of the dye to DNA and other molecules by means of click chemistry.

BDP® 630/650-X-NHS ester

BDP 630/650 is a borondipyrromethene fluorophore tuned to Cyanine5 excitation and emission channels. The dye is bright and highly photostable. It is useful for fluorescence polarization assays. This is an amine-reactive NHS ester derivative.

Cyanine5 carboxylic acid

Cyanine5 carboxylic acid, unactivated dye. An analog of Cy5®; free carboxylic acid.

General properties

Appearance: dark blue to violet solid
Molecular weight: 767.66
CAS number: 2375105-86-3
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/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. Yun, W.S.; Yang, W.; Shim, M.K.; Song, S.; Choi, J.; Kim, J.; Kim, J.; Moon, Y.; Jo, S.H.; Lim, D.-K.; Kim, K. Accurately controlled tumor temperature with silica-coated gold nanorods for optimal immune checkpoint blockade therapy. Biomaterials Research, 2024, 28, 0024. doi: 10.34133/bmr.0024
  2. Broering, M.F.; Oseliero Filho, P.L.; Borges, P.P.; da Silva, L.C.C.; Knirsch, M.C.; Xavier, L.F.; Scharf, P.; Sandri, S.; Stephano, M.A.; de Oliveira, F.A.; Sayed, I.M.; Gamarra, L.F.; Das, S.; Fantini, M.C.A.; Farsky, S.H.P. Development of Ac2-26 Mesoporous Microparticle System as a Potential Therapeutic Agent for Inflammatory Bowel Diseases. International Journal of Nanomedicine, 2024, 19, 3537-3554. doi: 10.2147/IJN.S451589
  3. Han, G.; Kim, H.; Jang, H.; Kim, E.S.; Kim, S.H.; Yang, Y. Oral TNF-α siRNA delivery via milk-derived exosomes for effective treatment of inflammatory bowel disease. Bioactive Materials, 2024, 34, 138-149. doi: 10.1016/j.bioactmat.2023.12.010
  4. Miao, L.; Yu, C.; Guan, G.; Luan, X.; Jin, X.; Pan, M.; Yang, Y.; Yan, J.; Chen, P.; Di, G. Extracellular Vesicles Containing GAS6 Protect the Liver from Ischemia-Reperfusion Injury by Enhancing Macrophage Efferocytosis via MerTK-ERK-COX2 Signaling. Cell Death Discov., 2024, 10(1), 1–13. doi: 10.1038/s41420-024-02169-y
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Cy® is a trademark of Cytiva.
This Product is offered and sold for research purposes only. It has not been tested for safety and efficacy in food, drug, medical device, cosmetic, commercial or any other use. Supply does not express or imply authorization to use for any other purpose, including, without limitation, in vitro diagnostic purposes, in the manufacture of food or pharmaceutical products, in medical devices or in cosmetic products.
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