A Coloured Intermediate on Reduction of Vitamin B1

Abstract

A VERY distinct green yellowish colour appears when vitamin B1(synthetic, I. G. Farben.), in a 0·5—1 per cent solution, is reduced with hydrosulphite in the manner described in a previous note1. The intensity of the colour is highest at the beginning, declines with the declining rate of reaction and disappears at the end. The same transient green colour is observed when the vitamin is reduced with zinc dust in normal hydrochloric acid.

References

  1. 1

    Lipmann, NATURE, 138, 1097 (1936).

  2. 2

    Adler, Hellström and v. Euler, Z. physiol. Chem., 242, 225 (1936).

  3. 3

    Karrer and Benz, Helv. chim. Acta, 19, 1028 (1936).

  4. 4

    Michaelis, J. Biol. Chem., 92, 211 (1931).

  5. 5

    See also Erlenmeyer, Epprecht and v. Meyenburg, Helv. chim. Acta, 31, 661 (1937).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

LIPMANN, F. A Coloured Intermediate on Reduction of Vitamin B1. Nature 140, 849 (1937). https://doi.org/10.1038/140849c0

Download citation

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.