Abstract
WE have been particularly interested in the report in NATURE1 by Bowden and Snow regarding the photochemistry of the vitamins, in view of our investigations of the absorption spectra of various vitamin B1 concentrates, a preliminary report of which was presented at the meeting of the American Chemical Society at Buffalo, September, 1931.2 At that time we noted that the concentrates examined had absorption maxima at 2600 A., but as the concentrates were admittedly impure, and as some also presented maxima at other wave-lengths, we hesitated to identify any band with vitamin B1.
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References
NATURE, 129, 720; 1932.
Heyroth and Loofbourow, Bull. Bas. Sci. Res., 3, 237; 1931.
NATURE, 129, 866; 1932.
Heyroth and Loofbourow, J. Amer. Chem. Soc., 53, 3441; 1931.
Windaus, Tschesehe, Ruhkopf, Laquer, and Schultz, Z. physiol. Chem., 204, 123; 1932.
Guha, Biochem. J., 25, 941; 1931.
van Veen, Rec. trav. Chim., 50, 200, 208, 610; 1931.
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HEYROTH, F., LOOFBOUROW, J. Ultra-Violet Absorption Spectrum and Chemical Structure of Vitamin B1. Nature 130, 773 (1932). https://doi.org/10.1038/130773a0
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DOI: https://doi.org/10.1038/130773a0
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