Decomposition of the Yellow Form of Thiamine

Authors

  • Dr. Rudolf F. W. Hopmann,

    Corresponding author
    1. Abt. Biophysikalische Chemie. Biozentrum der Universität, Klingelbergstrasse 70, CH-4056 Basel (Switzerland)
    • Abt. Biophysikalische Chemie. Biozentrum der Universitat Klingelbergstrasse 70, CH-4056 Basel (Switzerland)
    Search for more papers by this author
  • Dr. Gian Pietro Brugnoni

    1. Department für; Pflanzenphysiologie, Ciba-Geigy AG Schwarzwaldallee 215, CH-4058 Basel (Switzerland)
    Search for more papers by this author

  • Thiamine Catalysis, Part 3.—Part 2: [2].

Abstract

A novel mechanism is proposed for the alkali-induced transformation of thiamine; it is based on the results of kinetic investigations. The time-dependent UV spectra of alkaline thiamine solutions, whose yellow color rapidly disappears, reveal isosbestic points, thus indicating that no intermediate is formed in significant amounts.

Ancillary