sulfo-Cyanine5 maleimide

Cat. # Quantity Price Lead time
13380 1 mg $115.00 in stock
23380 5 mg $290.00 in stock
43380 25 mg $695.00 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/absorption 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. Chen, L.; Xu, N.; Wang, P.; Zhu, H.; Zhang, Z.; Yang, Z.; Zhang, W.; Guo, H.; Lin, J. Nanoalbumin–Prodrug Conjugates Prepared via a Thiolation-and-Conjugation Method Improve Cancer Chemotherapy and Immune Checkpoint Blockade Therapy by Promoting CD8+ T-Cell Infiltration. Bioengineering & Translational Medicine, 2023, 8(1), e10377. doi: 10.1002/btm2.10377
  2. Williams, C.; Dong, K. C.; Arkinson, C.; Martin, A. The Ufd1 Cofactor Determines the Linkage Specificity of Polyubiquitin Chain Engagement by the AAA+ ATPase Cdc48. Molecular Cell, 2023, 83(5), 759-769.e7. doi: 10.1016/j.molcel.2023.01.016
  3. Barkovich, K. J.; Zhao, Z.; Steinmetz, N. F. IRGD-Targeted Physalis Mottle Virus Like Nanoparticles for Targeted Cancer Delivery. Small Science, 2023, 3(8), 2300067. doi: 10.1002/smsc.202300067
  4. Kim, J.; Won, J.; Chung, D. K.; Lee, H. H. FRET Analysis of the Temperature-Induced Structural Changes in Human TRPV3. Scientific Reports, 2023, 13(1), 10108. doi: 10.1038/s41598-023-36885-9
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