Porphine or porphin is an organic compound of empirical formula C20H14N4. It is heterocyclic and aromatic. The molecule is a flat macrocycle, consisting of four pyrrole -like rings joined by four methine bridges, which makes it the simplest of the tetrapyrroles. [2]

Porphyrins (/ ˈpɔːrfərɪns / POR-fər-ins) are a group of heterocyclic, macrocyclic, organic compounds, composed of four modified pyrrole subunits interconnected at their α carbon atoms via methine bridges (=CH−).

Mar 15, 2018 · A porphyrin is a large ring molecule consisting of 4 pyrroles, which are smaller rings made from 4 carbons and 1 nitrogen. These pyrrole molecules are connected together through a series of single and double bonds which forms the molecule into a large ring. The technical name for 4 pyrroles connected together is a tetrapyrrole.

Porphyrin is a group of organic heterocyclic compounds that are comprised of four modified pyrrole subunits connected via methine bridges and form an aromatic macrocyclic structure, which has one or more side chains attached. Many porphyrins are naturally occurring pigments.

Oct 31, 2016 · Porphine (also called porphin) is a planar aromatic heterocyclic compound with a 12-carbon outside ring and four embedded pyrrole rings. It is a dark red crystalline solid that is soluble in some polar solvents such as pyridine and dioxane.

Jul 4, 2016 · Porphyrins are a group of heterocyclic macrocycle organic compounds, composed of four modified pyrrole subunits interconnected at their α carbon atoms via methine bridges (=CH−). The parent porphyrin is porphin, and substituted porphines are called porphyrins.

The meaning of PORPHIN is a deep purple crystalline compound C20H14N4 that is made synthetically from pyrrole and formaldehyde, contains four pyrrole rings joined by =CH— groups so as to give a heterocyclic arrangement, and forms the essential skeletal structure of the porphyrins, heme, and chlorophyll.

porphyrin, any of a class of water-soluble, nitrogenous biological pigments (biochromes), derivatives of which include the hemoproteins (porphyrins combined with metals and protein).

Porphyrins are a class of macrocycles comprised of four pyrrole units conjugated through methine bridges, with this highly conjugated structure giving intense absorption in both the UV and visible regions of the electromagnetic spectrum.

As nouns the difference between porphyrin and porphin is that porphyrin is (organic chemistry) any of a class of heterocyclic compounds containing four pyrrole rings arranged in a square; they are important in biochemistry in a form with a metal atom in the central cavity (hemoglobin with iron, chlorophyll with magnesium, etc) while porphin is...