Biologically Active Substance
tetrapyrroles
Subclass of:
Heterocyclic Compounds, 4 or More Rings; Macrocyclic Compounds; Pyrroles
Definitions related to tetrapyrroles:
  • Compound containing four pyrrole rings.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • Four PYRROLES joined by one-carbon unit linking position 2 of one to position 5 of the next. The conjugated bond system results in PIGMENTATION.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
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