Sulfo-Cyanine5 maleimide

Cat. # Quantity Price Lead time
13380 1 mg $110.00 in stock
23380 5 mg $290.00 in stock
43380 25 mg $690.00 in stock
53380 50 mg $1270.00 in stock
63380 100 mg $1990.00 in stock

A water soluble, hydrophilic sulfo-Cyanine5 maleimide (Cy5® maleimide analog). We recommend this product for protein labeling, including labeling of antibodies as a perfect replacement for Cy5® maleimide. Labeled proteins can be easily separated from unreacted dye by gel filtration, spin column purification, dialysis, electrophoresis or chromatography.

An analog without sulfo groups, Cyanine5 maleimide, is also available.

Sulfo-Cyanine5 absorbance and emission spectra

Sulfo-Cyanine5 absorbance and emission spectra

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General properties

Appearance: dark blue powder
Molecular weight: 803.00
CAS number: 2242791-82-6
Molecular formula: C38H43KN4O9S2
Solubility: soluble in water, DMSO, DMF
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: 271000
Emission maximum, nm: 662
Fluorescence quantum yield: 0.28
CF260: 0.04
CF280: 0.04

Product citations

  1. Delvaux, N.A.; Mathew, B.; Rice, K.G. Fluorescent Labeling of Plasmid DNA for Gene Delivery: Implications of Dye Hydrophobicity on Labeling Efficiencies and Nanoparticle Size. Analytical Biochemistry, in press. doi: 10.1016/j.ab.2020.113895
  2. Vervoort, D.F.M.; Pretto, C.; van Hest, J.C.M. Insight into N-terminal localization and dynamics of engineered virus-like particles. RSC Advances, 2020, 10(64), 38774–38781. doi: 10.1039/D0RA07612K
  3. Carreras-Badosa, G.; Maslovskaja, J.; Periyasamy, K.; Urgard, E.; Padari, K.; Vaher, H.; Tserel, L.; Gestin, M.; Kisand, K.; Arukuusk, P.; Lou, C.; Langel, Ü.; Wengel, J.; Pooga, M.; Rebane, A. NickFect type of cell-penetrating peptides present enhanced efficiency for microRNA-146a delivery into dendritic cells and during skin inflammation. Biomaterials, 2020, 262, 120316. doi: 10.1016/j.biomaterials.2020.120316
  4. Shukla, Sourabh and Roe, Anne Jessica and Liu, Ruifu and Veliz, Frank A. and Commandeur, Ulrich and Wald, David N. and Steinmetz, Nicole F. Affinity of plant viral nanoparticle potato virus X (PVX) towards malignant B cells enables cancer drug delivery. Biomaterials Science, 2020, 8(14), 3935–3943. doi: 10.1039/D0BM00683A
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