Organic Chemical
pyrazines
Subclass of:
Heterocyclic Compounds, 1-Ring
Definitions related to pyrazines:
  • 6-membered aromatic ring structure with 2 para nitrogen heteroatoms.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • A heterocyclic aromatic organic compound with the chemical formula C4H4N2.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
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