A natural pigment containing four pyrrole rings joined by one-carbon units linking position 2 of one pyrrole ring to position 5 of the next.
Synonyms: tetrapyrrole tetrapyrroles
This is just here as a test because I lose it
A natural pigment containing four pyrrole rings joined by one-carbon units linking position 2 of one pyrrole ring to position 5 of the next.
Synonyms: tetrapyrrole tetrapyrroles