haemin

The organic iron contained in it is obtained from the red-coloring matter of healthy ox blood, called haemin, examined and tested.

Valere Aude Dare to Be Healthy, Or, The Light of Physical Regeneration Louis Dechmann

Haemoglobin can be separated into a protein substance, i.e. globin, and a red substance, still containing iron which, after oxidation, with hydrochloric acid yields a saltlike complex iron compound, called haemin.

Nobel Prize in Chemistry 1930 - Presentation Speech 1966

Even if I add that Fischer has demonstrated the occurrence of haemin in yeast, all this is overshadowed by the fact that, chemically speaking, the pigment of green plants, i.e. chlorophyll, is closely related with the red blood pigment, and even derives, as Fischer has shown, from exactly the same parent substance, as regards the porphyrins.

Nobel Prize in Chemistry 1930 - Presentation Speech 1966

To determine the manner in which all these atoms, numbering more than 70, are linked, or in other words to determine the chemical constitution of haemin, was one of the most difficult and complicated tasks with which any chemist could be faced.

Nobel Prize in Chemistry 1930 - Presentation Speech 1966

Having completed his work on the blood pigments and their components by the haemin synthesis, Fischer turned with undiminished energy to research into chlorophyll.

Nobel Prize in Chemistry 1930 - Presentation Speech 1966

Considerable uncertainty however prevailed for a long time even regarding the empirical formula of haemin, and the uncertainty as to its internal chemical structure was even greater.

Nobel Prize in Chemistry 1930 - Presentation Speech 1966

Fischer received the greatest honour of all, the Nobel Prize for 1930, for his work on the chemistry of pyrrole and the synthesis of haemin.

Hans Fischer - Biography 1966

This is the road which Professor Hans Fischer of Munich travelled, to reach his destination with perseverance and determination; not only did he determine completely the constitution of haemin and all its decomposition products: he also prepared the blood pigments from their simplest constituents by synthesis, a scientific achievement which would scarcely have been considered possible even a generation ago.

Nobel Prize in Chemistry 1930 - Presentation Speech 1966

These researches have in the main been concerned as we have seen with the two most vital pigments, haemin and chlorophyll.

Nobel Prize in Chemistry 1930 - Presentation Speech 1966

It was discovered that the haemin molecule can be converted by certain chemical procedures into iron-free substances, called porphyrins, and that the porphyrins can be broken down, by other procedures, into pyrrole derivatives, i.e. into compounds containing four carbon atoms and one nitrogen atom in a closed ring.

Nobel Prize in Chemistry 1930 - Presentation Speech 1966