Structure via PubChem · Public domain (PubChem)
pyrazine
Sign in to saveAlso known as p-diazine, paradiazine, 1,4-diazine, pyz
Pyrazine is a heterocyclic aromatic organic compound with the chemical formula C4H4N2. It is a symmetrical molecule with point group D2h. Pyrazine is less basic than pyridine, pyridazine and pyrimidine. It is a "deliquescent crystal or wax-like solid with a pungent, sweet, corn-like, nutty odour".
Chemical data
- Formula
- C4H4N2
- Molecular weight
- 80.09 g/mol
- IUPAC name
- pyrazine
- SMILES
- C1=CN=CC=N1
- InChIKey
- KYQCOXFCLRTKLS-UHFFFAOYSA-N
- XLogP
- -0.2
- Polar surface area
- 25.8 Ų
- H-bond donors
- 0
- H-bond acceptors
- 2
- Formal charge
- 0
via PubChem
Wikidata facts
- Mass
- 80.037
- Image
- Sample of pyrazine.jpg
Show 6 more facts
- boiling point
- 115
- chemical formula
- C₄H₄N₂
- Commons category
- Pyrazine
- canonical SMILES
- C1=CN=CC=N1
- pKa
- 0.65
- melting point
- 55
via Wikidata · CC0
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Article
4 sectionsContents
- Synthesis
- See also
- References
- External links
Pyrazine is a heterocyclic aromatic organic compound with the chemical formula C4H4N2. It is a symmetrical molecule with point group D2h. Pyrazine is less basic than pyridine, pyridazine and pyrimidine. It is a "deliquescent crystal or wax-like solid with a pungent, sweet, corn-like, nutty odour".
Pyrazine and a variety of alkylpyrazines are flavor and aroma compounds found in baked and roasted goods. Tetramethylpyrazine (also known as ligustrazine) is reported to scavenge superoxide anions and decrease nitric oxide production in human granulocytes.