1. Chloride of heme in which Fe2+ has become Fe3+. H. crystals are called Teichmann crystals, under crystal. 2. Any coordination complex of chloro(porphyrinato)iron(III). SYN: chlorohemin, factor X for Haemophilus, ferriheme chloride, ferriporphyrin chloride, ferriprotoporphyrin, hematin chloride.
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he·min or chiefly Brit hae·min 'hē-mən n a red-brown to blue-black crystalline salt C34H32N4O4FeCl that inhibits the biosynthesis of porphyrin and is used to ameliorate the symptoms of some forms of porphyria called also protohemin
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he·min (heґmin) 1. a porphyrin chelate of iron (III), derived from red blood cells; the chloride of heme. It is used to ameliorate the symptoms of acute intermittent porphyria, porphyria variegata, and hereditary coproporphyria; administered intravenously. 2. hematin (def. 1).Medical dictionary. 2011.