Cyanine5 maleimide

Cat. # Quantity Price Lead time
13080 1 mg $110.00 in stock
23080 5 mg $210.00 in stock
43080 25 mg $410.00 in stock
53080 50 mg $695.00 in stock
63080 100 mg $1190.00 in stock

Cyanine5 maleimide is a mono-reactive dye which selectively couples with thiol groups (for example, with cysteines in peptides and proteins) to give labeled conjugates.

Cyanine5 is an analog of Cy5®, a common fluorophore which is compatible with various instrumentation like microscopes, imagers, and fluorescence readers.

For the labeling of antibodies and sensitive proteins we recommend to use the water soluble sulfo-Cyanine5 maleimide.

Cy5 excitation and emission spectra

Cy5 excitation and emission spectra

Customers also purchased with this product

BDP TMR maleimide

A bright, thiol reactive dye for TAMRA channel. Useful for microscopy and fluorescence polarization assays, among other applications.
Add this product to your cart and
get free express delivery

TAMRA azide, 5-isomer

TAMRA fluorescent dye azide for Click chemistry.

Cyanine5.5 maleimide

Cyanine5.5 maleimide is a thiol reactive dye for protein labeling.
Add this product to your cart and
get free express delivery

General properties

Appearance: dark blue powder
Molecular weight: 641.24
CAS number: 1437872-46-2 (without anion), 1437796-65-0 (chloride)
Molecular formula: C38H45ClN4O3
IUPAC name: 3H-​Indolium, 2-​[5-​[1-​[6-​[[2-​(2,​5-​dihydro-​2,​5-​dioxo-​1H-​pyrrol-​1-​yl)​ethyl]​amino]​-​6-​oxohexyl]​-​1,​3-​dihydro-​3,​3-​dimethyl-​2H-​indol-​2-​ylidene]​-​1,​3-​pentadien-​1-​yl]​-​1,​3,​3-​trimethyl-
Solubility: soluble in organic solvents (DMF, DMSO, dichloromethane), practically insoluble in water (31 uM, 23 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: 646
ε, L⋅mol−1⋅cm−1: 250000
Emission maximum, nm: 662
Fluorescence quantum yield: 0.2
CF260: 0.03
CF280: 0.04

Product citations

  1. Ast, J.; Arvaniti, A.; Fine, N.H.F.; Nasteska, D.; Ashford, F.B.; Stamataki, Z.M Koszegi, Z.; Bacon, A.; Trapp, S.; Jones, B.J.; Hastoy, B.; Tomas, A.; Reissaus, C.; Linnemann, A.K.; D'Este, E.; Calebiro, D.; Johnsson, K.; Podewin, T.; Broichhagen, J.; Hodson, D.J. LUXendins reveal endogenous glucagon-like peptide-1 receptor distribution and dynamics. bioRxiv, preprint. doi: 10.1101/557132
  2. Kesarwani, V.; Kelly, H.G.; Shankar, M.; Robinson, K.J.; Kent, S.J.; Traven, A.; Corrie, S.R. Characterisation of key bio-nano interactions between organosilica nanoparticles and Candida albicans. ACS Applied Materials & Interfaces, 2019, 11(38), 34676–34687. doi: 10.1021/acsami.9b10853
  3. Gardinier, T.C.; Turker, M.Z.; Hinckley, J.A.; Katt, W.P.; DomNwachukwu, N.; Woodruff, F.; Hersh, J.; Wang, J.; Cerione, R.A.; Wiesner, U.B. Controlling Surface Chemical Heterogeneities of Ultrasmall Fluorescent Core–Shell Silica Nanoparticles as Revealed by High-Performance Liquid Chromatography. The Journal of Physical Chemistry C, 2019, 123(37), 23246–23254. doi: 10.1021/acs.jpcc.9b06905
  4. Turker, M.Z.; Gardinier, T.C.; Hinckley, J.A.; Contreras, C.B.; Woodruff, F.; Ma, K.; Kohle, F.F.E.; Wiesner, U.B. Inner and Outer Surface Functionalizations of Ultrasmall Fluorescent Silica Nanorings As Shown by High-Performance Liquid Chromatography. Chemistry of Materials, 2019, 31(15), 5519–5528. doi: 10.1021/acs.chemmater.9b01236
Show more (33)
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.