MSA4219

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Properties


Product Name	7-Hydroxy-4 methylcoumarin; 7-Methylumbelliferone; beta-methylumbelliferone; Hymecromone; Coumarin 4; Coumarin 456; Umbelliferone 47
CAS Number	90-33-5
Abbreviation	Coumarin 4; Coumarin 456; Umbelliferone 47
Molecular Formula	C₁₀H₈O₃
Molecular Weight (g/mol)	176.17
Melting Point ^oC	193-195
Solubility	Soluble in Acetone and Organic Solvents
Appearance	White Crystalline Powder
Application	Laser Dye
Absorption Maximum (nm)	372
Extinction Coefficient	21000
Absorptivity (L^.g^-1cm^-1)	119
TSCA	Yes
EINECS	201-986-7
Comments	Lasing range440-480, pump source = flashlamp; for pulsed and SW operation