sulfo-Cyanine3 maleimide

Cat. # Quantity Price Lead time
11380 1 mg $115 in stock
21380 5 mg $290 in stock
41380 25 mg $695 in stock
51380 50 mg $1190 in stock
61380 100 mg $1990 in stock
Found better price? Let us know and we will propose the way forward!

sulfo-Cyanine3 maleimide is a water-soluble, thiol-reactive dye for labeling. This is an analog of Cy3® maleimide.

This product is recommended for labeling antibodies and other labile proteins in mild, purely aqueous conditions. The dye is water soluble and does not require organic co-solvent.

A non-sulfonated Cyanine3 maleimide is available.

Sulfo-Cyanine3 maleimide

Sulfo-Cyanine3 maleimide

Customers also purchased with this product

AF 488 azide

AF 488 azide is a fluorophore with emission in the green spectrum range. It reacts with alkynes in copper-catalyzed cycloaddition reactions.

FAM maleimide, 6-isomer

Fluorescein (FAM) maleimide is a thiol reactive dye derived from isomerically pure 6-FAM. Fluorescein is a bright dye that is compatible with various fluorescence measurement instruments.

FAM phosphoramidite, 6-isomer

Single isomer 6-FAM phosphoramidite for the synthesis of modified oligonucleotides.

General properties

Appearance: red powder
Molecular weight: 776.96
CAS number: 1656990-68-9
Molecular formula: C36H41KN4O9S2
IUPAC name: 3H-​Indolium, 2-​[3-​[1-​[6-​[[2-​(2,​5-​dihydro-​2,​5-​dioxo-​1H-​pyrrol-​1-​yl)​ethyl]​amino]​-​6-​oxohexyl]​-​1,​3-​dihydro-​3,​3-​dimethyl-​5-​sulfo-​2H-​indol-​2-​ylidene]​-​1-​propen-​1-​yl]​-​1,​3,​3-​trimethyl-​5-​sulfo-​, inner salt, potassium salt
Solubility: soluble in water (0.39 M = 30 g/L), DMF, DMSO
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: 548
ε, L⋅mol−1⋅cm−1: 162000
Emission maximum, nm: 563
Fluorescence quantum yield: 0.1
CF260: 0.03
CF280: 0.06

Product citations

  1. Proksch, J.; Dal Colle, M.C.S.; Heinz, F.; Schmidt, R.F.; Gottwald, J.; Delbianco, M.; Keller, B.G.; Gradzielski, M.; Alexiev, U.; Koksch, B. Impact of glycan nature on structure and viscoelastic properties of glycopeptide hydrogels. ChemRxiv, 2024, preprint. doi: 10.26434/chemrxiv-2024-wzm4c
  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. 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
  4. Gileva, A.; Trushina, D.; Yagolovich, A.; Gasparian, M.; Kurbanova, L.; Smirnov, I.; Burov, S.; Markvicheva, E. Doxorubicin-Loaded Polyelectrolyte Multilayer Capsules Modified with Antitumor DR5-Specific TRAIL Variant for Targeted Drug Delivery to Tumor Cells. Nanomaterials, 2023, 13(5), 902. doi: 10.3390/nano13050902
Show more (37)
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.