Effect of solvent on UV and visible spectra of formylmethylflavin and photoproducts.
The UV and visible absorption maxima and the molar absorptivities of formylmethylflavin and its photoproducts, lumichrome and lumiflavin, have been determined in water (pH 7.0), acetonitrile, methanol, ethanol, 1-propanol, 1-butanol, dichloroethane and chloroform. The effect of solvent polarity on the position and intensity of the absorption bands of these compounds has been demonstrated. The variations in the pi-pi* transitions corresponding to the main absorption bands of flavins are discussed.
Ahmad
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Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Karachi, Karachi-75270, Pakistan.
Fashiullah
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