pyrazine
Oxford Dictionary of Chemistry:
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pyrazine
An unsaturated heterocyclic compound having two nitrogen atoms in a six-membered ring, C4H4N2; r.d. 1.03; m.p. 52°C; b.p. 115°C. Pyrazine is a symmetric diazine.
Pyrazine
Wiley Dictionary of Flavors:
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Pyrazines
Double nitrogen heterocyclic ring structures with alternating double bonds, produced mainly through the Maillard Reaction are responsible for the roasted, nutty notes in nature. Some pyrazines, such as 2 methoxy 3 isobutyl pyrazine (green bell pepper pyrazine) are some of the most powerful approved aroma ingredients.
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Oxford Dictionary of Chemistry
A Dictionary of Chemistry. Sixth Edition. Copyright © Market House Books Ltd, 2008. All rights reserved.
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