Catalog Number
ACM41175455-2
Category
Coumarin Dyes; Other Materials
Synonyms
2,3,6,7,10,11-Hexahydro-1H,5H-cyclopenta[3,4][1]benzopyrano[6,7,8-ij]quinolizin-12(9H)-one
Description
Alfa Chemistry offers high-purity Coumarin 478 products for various research purposes. Please contact us by email if you do not find the specification you are looking for on this page.
IUPAC Name
3-oxa-16-azapentacyclo[10.7.1.02,10.05,9.016,20]icosa-1(20),2(10),5(9),11-tetraen-4-one
Molecular Formula
C18H19NO2
Canonical SMILES
C1CC2=C(C1)C(=O)OC3=C2C=C4CCCN5C4=C3CCC5
InChI
InChI=1S/C18H19NO2/c20-18-13-6-1-5-12(13)15-10-11-4-2-8-19-9-3-7-14(16(11)19)17(15)21-18/h10H,1-9H2
InChI Key
LLSRPENMALNOFW-UHFFFAOYSA-N
Boiling Point
538.4 ± 50.0° °C
Melting Point
145.0 to 151.0 °C
Appearance
Light orange to Yellow to Green powder to crystal
Application
Such coumarin dyes are useful for laser dyes emitting blue-green light.
Storage
-20 °C in the dark
Covalently-Bonded Unit Count
1
Exact Mass
281.141579g/mol
Features And Benefits
Coumarins are aromatic lactone compounds, many of which are found in natural plants. Coumarin compounds having an electron donating group at the 7-position show strong light absorption and emission, whereas unsubstituted coumarin compounds hardly emit light. This is because intramolecular charge transfer occurs when both electron-donating and electron-withdrawing groups are present in the coumarin molecule. The introduction of groups at the 3- or 4-position largely controls the wavelength of light absorption and emission. Furthermore, the introduction of electron-withdrawing groups at these positions can enhance the luminescence intensity.
Monoisotopic Mass
281.141579g/mol
Storage Conditions
Store at room temperature and dry