Chlorin
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170718005
2007-11-11T09:29:33Z
Rifleman 82
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{{dablink|For the [[chemical element]] in the [[halogen]] group see [[chlorine]].}}
[[Image:Chlorin.svg|thumb|right|250px|Chemical Structure of Chlorin]]
In [[organic chemistry]], a '''chlorin''' is a large [[heterocyclic]] [[aromatic ring]] consisting, at the core, of 3 [[pyrrole]]s and one reduced pyrrole coupled through 4 methine linkages. Unlike a [[porphyrin]], a chlorin is therefore largely aromatic but not aromatic through the entire circumference of the ring.
Magnesium-containing chlorins are called [[chlorophyll]]s, and are the central photosensitive pigment in [[chloroplast]]s. A related compound, with 2 reduced pyrroles, is called a [[bacteriochlorin]].
Because of their photosensitivity, chlorins are in active use as photosensitizing agents in experimental [[laser]] [[cancer]] therapies.
==See also==
* [[Corrin]]
==External links==
[[Category:Biomolecules]]
[[Category:Nitrogen heterocycles]]
[[Category:Metabolism]]
[[Category:Photosynthesis]]
[[Category:Pyrroles]]
[[de:Chlorin]]
[[fr:Chlorine]]
[[io:Klorino]]
[[it:Clorina]]
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