pyrazine


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Related to pyrazine: thiazole

pyr·a·zine

 (pĭr′ə-zēn′)
n.
1. A crystalline organic base, C4H4N2, having a six-member aromatic ring in which the first and fourth atoms are nitrogen and the rest are carbon.
2. Any of a group of compounds derived from or structurally related to this base. Pyrazines occur in pteridines, some vitamins, and certain dyes such as phenazine.

[German Pyrazin, blend of Pyridin, pyridine and az(o)-, azo-.]
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References in periodicals archive ?
No pyrazine elements and the hard mineral aspect rule out Merlot.
1) was discovered by chemical modification of a pyrazine analog initially screened by in vitro anti-influenza virus activity in cells.
The structural formula of TMP shows that pyrazine largely determined its pharmacodynamics, while the side chain might be mainly responsible for its pharmacokinetics.
Puziah H, Jinap S, Sharifah KSM and A Asbi Effect of drying time, bean depth and temperature on free amino acid, peptide-N, sugar and pyrazine concentrations of Malaysian cocoa beans.
New pyrazine isoquinoline derivative with antiparasitic activity and its preparation.
With more tannin (more phenol rings), the pyrazine molecule responsible for the bell pepper finish is held in solution due to this interaction, resulting in a longer bell pepper finish.
High in pyrazine and the enzyme nattokinase, blood thinners that can prevent thrombosis (blood clot formations) by essentially devouring arterial plaque, natto significantly reduces the risk of suffering a pulmonary embolism (arterial blockage) that could lead to a heart attack or stroke.
Recently, another pyrazine was collected as a minor component from male emissions, but could not be identified (Robledo 2008).
However, pyrazine structures may eventually be formed if the attack is executed by the neighboring nitrogen atom.
Pyrazine carboxylic acids have been found on the basis of the reported x-ray molecular structures to be interesting and versatile ligands [1-9].
Padwa has developed nucleating agents based on compounds with nitrogen-containing aromatic cores such as pyridine, pyrimidine, pyrazine, pyridazine, triazine, and imidazole.
Zhang et al [6] reported that titanium nitrides resulted by milling titanium powder with pyrazine, a ring type organic compound, in benzene solution up to 336h.