Porphyrin

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

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Notion

Domain

Science and technology

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What Wikipedia says

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

Excerpt from the Wikipedia article “Porphyrin”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Lukáš Mižoch, Public domain, via Wikimedia Commons.