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Coumarin 343 X carboxylic acid,Cy343
Coumarin 343 is a blue emitting fluorophore used as a laser dye. The fluorophore can serve as a FRET donor for FAM (fluorescein).
General properties
Appearance:

yellow crystals
Molecular weight:

398.45
Molecular formula:

C22H26N2O5
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
Solubility:

Well soluble in DMF, DMSO, moderay soluble in DCM, DCE, EtOAc, insoluble in diethyl ether.
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.
Spectral properties
Excitation maximum, nm:

437
ε, L⋅mol−1⋅cm−1:

39000
Emission maximum, nm:

477
Fluorescence quantum yield:

0.63
CF260:

0.29
CF280:

0.24
Coumarin 343 X carboxylic acid,Cy343
马来酰亚胺 Dye maleimides
BDP FL maleimide
Cyanine3 maleimide
Cyanine5 maleimide
Cyanine5.5 maleimide
Cyanine7 maleimide
Cyanine7.5 maleimide
Sulfo-Cyanine3 maleimide
Sulfo-Cyanine5 maleimide
羧酸 Carboxylic acids
Pyrenebutyric acid
BDP FL carboxylic acid
Cyanine3 carboxylic acid
Cyanine3.5 carboxylic acid
Cyanine5 carboxylic acid
Cyanine5.5 carboxylic acid
Cyanine7 carboxylic acid
Cyanine7.5 carboxylic acid
Sulfo-Cyanine3 carboxylic acid
Sulfo-Cyanine5 carboxylic acid
Sulfo-Cyanine7 carboxylic acid