Abstract
IN the same laboratory where thirty years ago Eykman made his famous investigations, Jansen and Donath1 succeeded in 1926 in obtaining for the first time the antineuritic vitamin in crystalline form, in quantities too small, however, for further study. Five years later, the same results were also obtained by other investigators ; almost simultaneously there appeared publications on the same subject by van Veen2, Windaus and Tschesche3 and Ohdake4, whose crystalline products were only slightly more active than that of Jansen and Donath, although at first the contrary was stated5. Moreover, all these substances had roughly the same empirical formula, though they had been isolated from different sources—rice-bran and yeast.
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References
Proc. Acad. Sci. Amsterdam, 29, 1390 ; 1926.
Recueil, 49, 1196 ; 1930.
Z. physiol. Chem., 204, 123 ; 1932.
Proc. Imp. Acad. Tokyo, 7, 102: 1931.
A. G. van Veen, Z. physiol. Chem., 208, 125 ; 1932.
Biochem. J., 27, 232 ; 1933.
Meded. Dienst Volksgezondheid, N. I., 21, 184 ; 1932.
Recueil, 50, 610 ; 1931.
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VAN VEEN, A. Activity of Crystalline Preparations of Vitamin B1. Nature 133, 137 (1934). https://doi.org/10.1038/133137a0
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DOI: https://doi.org/10.1038/133137a0
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