title: Studies on estrification and sulphonation of riboflavin in the environment of highly concentrated sulphuric acid.
abstract: The article presents investigations of riboflavin reactions in aqueous solutions of sulphuric acid. Analysis of UV/VIS, 1H NMR spectra and TLC indicates that at the beginning of the reaction ester of riboflavin were obtained and then sulphonation reaction took place. From the analysis of UV/VIS spectra the kinetics of the reaction was calculated, using own computer program.
authors.affiliation: Department of Analytical Chemistry, Medical University of Lódź, 1 Muszyńskiego Str., 90-151 Lódź, Poland.
authors.forename: Wojciech
authors.initials: W
authors.lastname: Pajak
authors.forename: Elzbieta
authors.initials: E
authors.lastname: Brzezińska
mesh_terms: D000465:Algorithms; D004952:Esters / Q000138:chemical synthesis; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D012256:Riboflavin / Q000737:chemistry*; D013451:Sulfonic Acids / Q000138:chemical synthesis; D013464:Sulfuric Acids / Q000737:chemistry*
chemical_list: D004952:Esters; D013451:Sulfonic Acids; D013464:Sulfuric Acids; D012256:Riboflavin