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Related to pyrazine: thiazole


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-.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
'Imli' (Tamarind) contains many volatile phytochemicals such as limonene, geraniol, safrole, cinnamic acid, methyl salicylate, pyrazine and alkylthiazoles.
Novel pyrazine metabolites found in polymyxin biosynthesis by Paenibacillus polymyxa.
Pyrazine, a member of this class of substances, is found in natural compounds as well as in many drugs showing multiple biological activities [1], examples include Gliplizide, an oral hypoglycemic agent [2].
Even though tannins as a molecular class are very heterogeneous, there are some characteristic properties that tannins exhibit, including protein binding (sacrificial enological application); color stabilization depending upon reactivity; anti-oxidation effects; balancing body; and enhancing wine structure, as well as the potential of masking green pyrazine character.
Phenazine dyes are the derivatives of pyrazine. Phenazine also called azophenylene, dibenzo-p-diazine, dibenzopyrazine, and acridizine, is a dibenzo annulated pyrazine and the parent substance of many dyestuffs, such as the toluylene red, indulines, and safranines.
[22] studied the adsorption behaviour of four pyrazine inhibitors on a copper surface using the density functional theory and the difference in charge density and distribution analysis.
It was found that two Pt(II) ions bridged with one aromatic pyrazine (pz) ligand are more efficient in the hydrolysis of the methionine-containing peptides than a single Pt(II) ion in the corresponding mononuclear complex.
Pyrrole, 1, and pyrazine, 1d, 1a-c, and 1e, which may be treated as fragments of these systems, are also analyzed for comparison.
In all conducted variants of drying, several pyrazine derivatives were found, having impact on aroma description.
Matsui, "Synthesis and fluorescence properties of novel pyrazine boron complexes bearing a [beta]-iminoketone ligand," Organic Letters, vol.
Odell, "Factors Affecting the Formation of Pyrazine Compounds in Sugar-Amine Reactions," Journal of Agricultural and Food Chemistry, vol.