Sulfo-Cy3(Me)COOH

• CAT Number: I036789
• CAS Number: 1121756-11-3
• Molecular Formula: C30H36N2O8S2
• Molecular Weight: 616.75
• Purity: ≥95%
• Synonyms: 2-[(E,3E)-3-[1-(5-carboxypentyl)-3,3-dimethyl-5-sulfoindol-2-ylidene]prop-1-enyl]-1,3,3-trimethylindol-1-ium-5-sulfonate
• IUPAC Name: 2-[(E)-3-[1-(5-carboxypentyl)-3,3-dimethyl-5-sulfinooxyindol-2-ylidene]prop-1-enyl]-1,3,3-trimethylindol-1-ium-5-sulfonate
• InChI: InChI=1S/C30H36N2O8S2/c1-29(2)23-19-21(42(37,38)39)14-16-24(23)31(5)26(29)10-9-11-27-30(3,4)22-18-20(40-41(35)36)13-15-25(22)32(27)17-8-6-7-12-28(33)34/h9-11,13-16,18-19H,6-8,12,17H2,1-5H3,(H2-,33,34,35,36,37,38,39)
• InChIKey: LLOUQXJKNMUSGM-UHFFFAOYSA-N
• SMILES: CC1(C2=C(C=CC(=C2)S(=O)(=O)[O-])[N+](=C1/C=C/C=C3C(C4=C(N3CCCCCC(=O)O)C=CC(=C4)OS(=O)O)(C)C)C)C

Sulfo-Cy3(Me)COOH（Cat No.:I036789）is a fluorescent dye commonly used in molecular biology for labeling and detection in various applications, including flow cytometry, microscopy, and gene expression analysis. It is a sulfonated derivative of Cy3, a bright red-orange fluorescent dye, with a methyl group (Me) and a carboxyl group (COOH) for improved solubility and conjugation to biomolecules like proteins, nucleic acids, and antibodies. The sulfonate group enhances the dye’s water solubility, making it suitable for aqueous solutions. Sulfo-Cy3(Me)COOH is frequently employed in fluorescence-based assays and imaging to study molecular interactions and biological processes.