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)-tetraen-5-yl}carbonylamino)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: O=C(NCCCCCC(O)=O)C1=CC2=CC(CCCN3CCC4)=C3C4=C2OC1=O

Coumarin 343 is a blue emitting fluorophore used as a laser dye. The fluorophore can serve as a FRET donor for FAM (fluorescein).