hemin(redirected from hematin chloride)
Also found in: Dictionary, Thesaurus, Encyclopedia.
1. a porphyrin chelate of iron, derived from red blood cells; the chloride of heme. It is used to treat the symptoms of various porphyrias.
2. hematin (def. 1).
1. Chloride of heme in which Fe2+ has become Fe3+. Hemin crystals are called Teichmann crystals , under crystal.
2. Any coordination complex of chloro(porphyrinato)iron(III).
The reddish-brown crystalline chloride of heme, C34H32N4O4FeCl, produced when hemoglobin reacts with glacial acetic acid and sodium chloride in a laboratory test for the presence of blood.