Coumarin 343 X carboxylic acid

• CAT Number: I025120
• CAS Number: 946123-11-1
• Molecular Formula: C22H26N2O5
• Molecular Weight: 398.46
• Purity: 98%
• Synonyms: Coumarin 343 X carboxylic acid
• Solubility: Soluble in DMSO
• Appearance: Solid powder
• Storage: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
• IUPAC Name: 6-[(4-oxo-3-oxa-13-azatetracyclo[7.7.1.02,7.013,17]heptadeca-1,5,7,9(17)-tetraene-5-carbonyl)amino]hexanoic acid
• InChI: InChI=1S/C22H26N2O5/c25-18(26)8-2-1-3-9-23-21(27)17-13-15-12-14-6-4-10-24-11-5-7-16(19(14)24)20(15)29-22(17)28/h12-13H,1-11H2,(H,23,27)(H,25,26)
• InChIKey: HCUGYFCWVUOZRK-UHFFFAOYSA-N
• SMILES: C1CC2=C3C(=C4C(=C2)C=C(C(=O)O4)C(=O)NCCCCCC(=O)O)CCCN3C1

Coumarin 343 (C343)（Cat No.:I025120）is a fluorescent dye commonly used in chemical and biological research. It exhibits strong absorption and emission in the UV-visible spectrum, making it valuable in fluorescence-based applications. When conjugated with carboxylic acid, the resulting compound combines the optical properties of Coumarin 343 with the functionality of the carboxyl group. This modification enhances solubility in polar solvents and enables further chemical reactions, such as covalent binding to biomolecules or surfaces. Coumarin 343 carboxylic acid derivatives are used in sensing, imaging, and molecular labeling applications.