Metalloporphyrins

**Definition:** Porphyrins which are combined with a metal ion. The metal is bound equally to all four nitrogen atoms of the pyrrole rings. They possess characteristic absorption spectra which can be utilized for identification or quantitative estimation of porphyrins and porphyrin-bound compounds.

**Tree numbers:** - D02.257.250 - D03.383.129.578.840.500.640 - D03.633.400.909.500.640 - D04.345.783.500.640 - D23.767.727.640

**Synonyms:** - Metalloporphyrin