Sulfo-Cyanine3 maleimide

Cat. # Quantity Price Lead time
11380 1 mg $110.00 in stock
21380 5 mg $290.00 in stock
41380 25 mg $690.00 in stock
51380 50 mg $1270.00 in stock
61380 100 mg $1990.00 in stock

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

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

A non-sulfonated Cyanine3 maleimide is available.

Sulfo-Cyanine3 maleimide

Sulfo-Cyanine3 maleimide

Customers also purchased with this product

Cyanine5.5 NHS ester

Cyanine5.5 NHS is far-red / near-infrared amine-reactive dye.

Cyanine5 DBCO

Cyanine5 dye with dibenzocyclooctyne (DBCO) functional group for copper free Click chemistry.

BDP R6G maleimide

BDP R6G is a borondipyrromethene dye tuned to R6G (rhodamine 6G) channel. This is a thiol reactive maleimide for the labeling of protein cysteine residues, and other thiols.

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 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. Deckard, C.E.; Sczepanski, J.T. Reversible chromatin condensation by the DNA repair and demethylation factor thymine DNA glycosylase. Nucleic Acids Research, in press. doi: 10.1093/nar/gkab040
  2. Lapenta, F.; Aupič, J.; Vezzoli, M.; Strmšek, Ž.; Da Vela, S.; Svergun, D.I.; Carazo, J.M.; Melero, R.; Jerala, R. Self-assembly and regulation of protein cages from pre-organised coiled-coil modules. Nature Communications, 2021, 12, 939. doi: 10.1038/s41467-021-21184-6
  3. Aupič, J.; Strmšek, Ž.; Lapenta, F.; Pahovnik, D.; Pisanski, T.; Drobnak, I.; Ljubetič, A.; Jerala, R. Designed folding pathway of modular coiled-coil-based proteins. Nature Communications, 2021, 12, 940. doi: 10.1038/s41467-021-21185-5
  4. Tischer, D.; Weiner, O. Optogenetic Tuning of Protein-protein Binding in Bilayers Using LOVTRAP. Bio-protocol, 2020, 10(17), e3745. doi: 10.21769/BioProtoc.3745
Show more (14)
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.