A chlorin is a large heterocyclic aromatic ring consisting of 3 pyrroles and one reduced pyrrole, coupled through 4 methine linkages. Unlike a porphyrin, a chlorin is largely aromatic, but not aromatic through the entire circumference of the ring.
Chlorophylls are Mg-containing chlorin derivatives.
Chemical Formula: C20H16N4
Monoisotopic Molecular Weight: 312.13749653440004 Daltons
Standard Gibbs Free Energy of Formation (ΔfG'° in kcal/mol): 303.66794 [Latendresse13]
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