Cyanine5.5 NHS ester

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
Found better price? Let us know and we will propose the way forward!

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.

Cy5.5 absorbance and emission spectra

Cy5.5 absorbance and emission spectra

Customers also purchased with this product

BDP TR alkyne

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

DBCO NHS ester

Azodibenzocyclooctyne (DBCO, ADIBO) reagent for strain-promoted copper-free click chemistry (SPAAC). The reagent contains an NHS ester function for the attachment of the cyclooctyne to various molecules.

Cyanine7.5 alkyne

Reactive near infrared (NIR) dye for click chemistry containing a terminal alkyne group.
Add this product to your cart and
get free express delivery

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. 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
  2. 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
  3. Wen, H.; Martínez, M.G.; Happonen, E.; Qian, J.; Vallejo, V.G.; Mendazona, H.J.; Jokivarsi, K.; Scaravilli, M.; Latonen, L.; Llop, J.; Lehto, V.-P.; Xu, W. A PEG-assisted membrane coating to prepare biomimetic mesoporous silicon for PET/CT imaging of triple-negative breast cancer. International journal of pharmaceutics, 2024, 652, 123764. doi: 10.1016/j.ijpharm.2023.123764
  4. Kopp, A.; Kwon, H.; Johnston, C.; Vance, S.; Legg, J.; Galson-Holt, L.; Thurber, G.M. Impact of tissue penetration and albumin binding on design of T cell targeted bispecific agents. Neoplasia, 2024, 48, 100962. doi: 10.1016/j.neo.2023.100962
Show more (255)
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.