Letter | Published:

An Oxyporphyrin Hæmatin Compound as Intermediate between Protohæmatin and Verdohæmatin


IN our letter on “Coupled oxidation of ascorbic acid and hæmochromogens”1, we had observed the formation of a hæmatin compound with an absorption band at 639 mμ during the coupled oxidation of pyridine-hæmochromogen and ascorbic acid. The same compound was formed by action of hydrogen peroxide on the hæmochromogen in presence of ascorbic acid. On reduction it gave a hæmochromogen with the bands of protohæmochromogen. From these observations we had concluded that the compound was a hydrogen peroxide compound of proto hæmochromogen.

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  1. 1

    NATURE, 139, 1016; 1937.

  2. 2

    Treibs, A., and Wiedemann, E., Liebigs Ann., 466, 264 (1928).

  3. 3

    Fischer, H., Halbig, P., Walach B., Liebigs Ann., 453, 268 (1927). Fischer, H., Gebhardt, H., and Rothhaas, A., Liebigs Ann., 482, 1 (1930).

  4. 4

    Fischer, H., and Lautsch, W., Liebigs Ann., 528, 247 (1937).

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