Cyanine 3 Bisethyl Dye Potassium Salt

• CAT Number: R048552
• CAS Number: 474972-41-3
• Molecular Formula: C27H31KN2O6S2
• Molecular Weight: 582.771
• Purity: ≥95%
• Synonyms: 1-Ethyl-2-[3-(1-ethyl-1,3-dihydro-3,3-dimethyl-5-sulfo-2H-indol-2-ylidene)-1-propen-1-yl]-3,3-dimethyl-5-sulfo-3H-indolium Inner Salt Potassium Salt
• Storage: -20°C
• IUPAC Name: potassium;(2E)-1-ethyl-2-[(E)-3-(1-ethyl-3,3-dimethyl-5-sulfonatoindol-1-ium-2-yl)prop-2-enylidene]-3,3-dimethylindole-5-sulfonate
• InChI: InChI=1S/C27H32N2O6S2.K/c1-7-28-22-14-12-18(36(30,31)32)16-20(22)26(3,4)24(28)10-9-11-25-27(5,6)21-17-19(37(33,34)35)13-15-23(21)29(25)8-2;/h9-17H,7-8H2,1-6H3,(H-,30,31,32,33,34,35);/q;+1/p-1
• InChIKey: NCSHBPPBHPXBJE-UHFFFAOYSA-M
• SMILES: CCN1C2=C(C=C(C=C2)S(=O)(=O)[O-])C(C1=CC=CC3=[N+](C4=C(C3(C)C)C=C(C=C4)S(=O)(=O)[O-])CC)(C)C.[K+]

Cyanine 3 Bisethyl Dye Potassium Salt is a fluorescent dye commonly used in molecular biology and biochemistry, particularly in applications involving fluorescence microscopy, flow cytometry, and nucleic acid labeling. This cyanine dye features a conjugated polymethine chain that gives it strong fluorescence properties, making it useful for detecting biomolecules. The bisethyl structure enhances its solubility and stability, while the potassium salt form facilitates its dissolution in aqueous solutions. It is widely applied in DNA and RNA labeling, protein studies, and diagnostic assays.