pyrazine

American  

[peer-uh-zeen] / ˈpɪər əˌzin /

noun

plural

pyrazines

1. Chemistry. a heteroaromatic organic compound with the chemical formula C₄H₄N₂, which has its nitrogen atoms at the first and fourth positions in the ring.

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pyrazine Scientific  

/ pĭr′ə-zēn′ /

1. Any of a group of organic compounds having a six-member ring in which the first and fourth atoms are nitrogen and the rest are carbon. Pyrazines are components of many important compounds, including pteridines, some vitamins and antibiotics, and numerous dyes called phenazines.

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Example Sentences

Pyridine gives origin to: pyridazine or ortho-diazine, pyrimidine or meta-diazine, pyrazine or para-diazine, osotriazine, unsymmetrical triazine, symmetrical triazine, osotetrazone and tetrazine.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" by Various