Chlorin 182695 170718005 2007-11-11T09:29:33Z Rifleman 82 1255637 /* See also */ remove bold - unnec {{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]] {{biochem-stub}}