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Porphyrin (Read 1416 times)
Gerrit-Jan Linker
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Porphyrin
23.03.11 at 19:13:32
 
Porphyrin
 
Porphyrins are a group of organic compounds of which many occur in nature.  
 
One of the best-known porphyrins is heme, the pigment in red blood cells.
 
Porphyrins are heterocyclic macrocycles composed of four modified pyrrole subunits interconnected at their α carbon atoms via methine bridges (=CH-). Porphyrins are aromatic. That is, they obey Hückel's rule for aromaticity.
 
u]Source:[/u]
http://en.wikipedia.org/wiki/Porphyrin
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« Last Edit: 23.03.11 at 19:17:44 by Gerrit-Jan Linker »  

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