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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 E0783
CAS RN 1056693-13-0
Purity / Analysis Method: >98.0%(HPLC)

Product Number B5008
CAS RN 1256259-14-9
Purity / Analysis Method: >98.0%(T)

Product Number E1129
CAS RN 28821-18-3
Purity / Analysis Method: >98.0%(GC)(T)

Product Number C3063
CAS RN 55804-68-7
Purity / Analysis Method: >98.0%(HPLC)

Product Number C3044
CAS RN 87331-48-4
Purity / Analysis Method: >98.0%(HPLC)

Product Number D3354
CAS RN 20571-42-0
Purity / Analysis Method: >98.0%(GC)(T)

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 B2111
CAS RN 27425-55-4
Purity / Analysis Method: >98.0%(T)(HPLC)

Product Number D3356
CAS RN 53518-14-2
Purity / Analysis Method: >97.0%(GC)(T)

Product Number:   E0783 | Purity / Analysis Method:   >98.0%(HPLC)

Product Number:   B5008 | Purity / Analysis Method:   >98.0%(T)

Product Number:   E1129 | Purity / Analysis Method:   >98.0%(GC)(T)

Product Number:   C3063 | Purity / Analysis Method:   >98.0%(HPLC)

Product Number:   C3044 | Purity / Analysis Method:   >98.0%(HPLC)

Product Number:   D3354 | Purity / Analysis Method:   >98.0%(GC)(T)

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:   B2111 | Purity / Analysis Method:   >98.0%(T)(HPLC)

Product Number:   D3356 | Purity / Analysis Method:   >97.0%(GC)(T)

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