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Coumarin Dyes

 Coumarins are aromatic lactone compounds and many of them exist in natural plants. A coumarin compound with an electron-donating group on the 7-position shows strong light absorption and luminescence, whereas unsubstituted coumarin compounds are hardly luminescent. This is because intramolecular charge transfer occurs when electron-donating and -withdrawing groups coexist in the coumarin molecule. An introduction of a group on the 3- or 4-position largely controls the wavelength of light absorption and luminescence. Furthermore, an introduction of an electron-withdrawing group on these positions can enhance the intensity of luminescence. Such coumarin dyes are useful for laser dyes emitting blue-green light.
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Produit # C3044
CAS RN 87331-48-4
Pureté >98.0%(HPLC)

Produit # C3640
CAS RN 53518-18-6
Pureté >99.0%(T)(HPLC)

Produit # C3129
CAS RN 531-81-7
Pureté >98.0%(GC)(T)

Produit # C3063
CAS RN 55804-68-7
Pureté >98.0%(HPLC)

Produit # C3047
CAS RN 87331-47-3
Pureté >97.0%(HPLC)

Produit # D5008
CAS RN 84865-19-0
Pureté >98.0%(T)(HPLC)

Produit # M2937
CAS RN 57980-07-1
Pureté >98.0%(GC)(T)

Produit # M0631
CAS RN 91-44-1
Pureté >98.0%(GC)(T)

Produit # D4462
CAS RN 51473-74-6
Pureté >98.0%(HPLC)(N)

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