Как по Английски будет porphyrin

noun

Any of a class of pigments (including haem and chlorophyll) whose molecules contain a flat ring of four linked heterocyclic groups, sometimes with a central metal atom.

Примеры использования:

Changes in apoprotein and porphyrin fluorescence suggest two classes of bound porphyrins.

noun

An amorphous alkaloid, c₂₁ h₂₅ n₃ o₂, obtained from the bark of the australian tree alstonia constricta (family apocynaceae), which produces a red colour on reaction with nitric acid.