title: Effect of solvent on UV and visible spectra of formylmethylflavin and photoproducts.
abstract: 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.
authors.affiliation: Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Karachi, Karachi-75270, Pakistan.
authors.forename: I
authors.initials: I
authors.lastname: Ahmad
authors.forename: Q
authors.initials: Q
authors.lastname: Fashiullah