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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.
39 Results Found
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Product Number C3046
CAS RN 114768-72-8
Purity / Analysis Method: >98.0%(HPLC)

Product Number D4238
CAS RN 50995-74-9
Purity / Analysis Method: >98.0%(GC)(T)

Product Number D5007
CAS RN 117850-52-9
Purity / Analysis Method: >98.0%(T)(HPLC)

Product Number D4466
CAS RN 41934-47-8
Purity / Analysis Method: >98.0%(GC)

Product Number D5730
CAS RN 91-44-1
Purity / Analysis Method: >99.5%(GC)(T)

Product Number H1145
CAS RN 851963-03-6
Purity / Analysis Method: >98.0%(T)(HPLC)

Product Number C3043
CAS RN 41175-45-5
Purity / Analysis Method: >98.0%(HPLC)

Product Number C2267
CAS RN 41267-76-9
Purity / Analysis Method: >97.0%(HPLC)(N)

Product Number C2837
CAS RN 41044-12-6
Purity / Analysis Method: >98.0%(T)(HPLC)

Product Number C3045
CAS RN 113869-06-0
Purity / Analysis Method: >98.0%(HPLC)(N)

Product Number C2858
CAS RN 53518-18-6
Purity / Analysis Method: >95.0%(T)(HPLC)

Product Number C3640
CAS RN 53518-18-6
Purity / Analysis Method: >99.0%(T)(HPLC)

Product Number:   C3046 | Purity / Analysis Method:   >98.0%(HPLC)

Product Number:   D4238 | Purity / Analysis Method:   >98.0%(GC)(T)

Product Number:   D5007 | Purity / Analysis Method:   >98.0%(T)(HPLC)

Product Number:   D4466 | Purity / Analysis Method:   >98.0%(GC)

Product Number:   D5730 | Purity / Analysis Method:   >99.5%(GC)(T)

Product Number:   H1145 | Purity / Analysis Method:   >98.0%(T)(HPLC)

Product Number:   C3043 | Purity / Analysis Method:   >98.0%(HPLC)

Product Number:   C2267 | Purity / Analysis Method:   >97.0%(HPLC)(N)

Product Number:   C2837 | Purity / Analysis Method:   >98.0%(T)(HPLC)

Product Number:   C3045 | Purity / Analysis Method:   >98.0%(HPLC)(N)

Product Number:   C2858 | Purity / Analysis Method:   >95.0%(T)(HPLC)

Product Number:   C3640 | Purity / Analysis Method:   >99.0%(T)(HPLC)

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