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Peer reviewedPanijpan, Bhinyo – Journal of Chemical Education, 1979
Spectroscopic studies on solutions and x-ray diffraction work on crystals lead to the conclusion that the Metrogen of the pyrimidine ring is preferentially protonated. The correct monoprotonated structures of thiamine and its 4-amino-pyrimidine synthetic precursor are presented. (BT)
Descriptors: Biochemistry, Chemical Analysis, Chemical Nomenclature, Chemistry
