1 week ago - 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.

July 20, 1998 - pyrazine, any of a class of organic compounds of the heterocyclic series characterized by a ring structure containing four atoms of carbon and two of nitrogen. The pyrazine ring is part of many polycyclic compounds of biological or industrial ...

Pyrazine (1) is a six-membered aromatic heterocycle bearing two nitrogen atoms, situated in a 1,4-orientation, embedded in a carbon framework (Fig. 1).1,2 In addition, quinoxaline (2)3 and phenazine (3)4,5 heterocycles are two benzo derivatives which have one or two benzene moieties fused to ...

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PYRAZINE definition: a heteroaromatic organic compound with the chemical formula C4H4N2, which has its nitrogen atoms at the first and fourth positions in the ring. See examples of pyrazine used in a sentence.

February 22, 2023 - Interestingly, at least to me, ... Biotechnology Journal, Pyrazines are volatile, nitrogen-containing heterocyclic compounds widely distributed in plants, insects, fungi and bacteria....

The meaning of PYRAZINE is a crystalline heterocyclic weakly basic compound C4H4N2.

August 13, 2026 - Methoxypyrazines (MPs)—often just referred to as pyrazines by wine professionals—are some of the most distinctive and divisive aroma compounds in wine. They cause many “green” aromas in wine: bell pepper, jalapeño, grassiness, and earthy ...

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].

Pyrazine definition: A crystalline organic base, C4 H4 N2 , having a six-member aromatic ring in which the first and fourth atoms are nitrogen and the rest are carbon.

If you’ve been wondering why youthful wines from particular grapes taste really fruit-driven and others have a wide array of savory flavors, the answer may be methoxypyrazine. A group of these savory flavors (which includes “bell pepper”) come from a from a specific aroma compound called methoxypyrazine (often called “pyrazines” for short). The compound is found in higher proportions in the “Bordeaux-family” grapes:

Pyrazines: A heterocyclic aromatic organic compounds with the chemical formula C4H4N2.

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August 14, 2020 - Pyrazines are volatile, nitrogen-containing heterocyclic compounds widely distributed in plants,[10] insects,[11] fungi and bacteria.[12] They act as an odor signal to repel predators and effe

A diazine that is benzene in which the carbon atoms at positions 1 and 4 have been replaced by nitrogen atoms.

Pyrazine is one of the important class of heterocyclic compounds that can be obtained naturally or synthesized chemically. Pyrazine ring has got importance in exhibiting various biological activities in association with other scaffolds like ...

See also: Pyrazine · [edit] English Wikipedia has an article on: pyrazineWikipedia · [edit] [edit] pyrazine (plural pyrazines) (organic chemistry) A diazine in which the two nitrogen atoms are in the para- positions; many of its derivatives are pharmaceuticals.

June 2, 2021 - Pyrazines are chemical compounds (technically called “methoxypyrazines”) found in grape skin and stems that are responsible for many “green” flavors in wine. Levels of pyrazines are dependent on viticultural practices, climate, and grape ...

It is a "deliquescent crystal or wax-like solid with a pungent, sweet, corn-like, nutty odour".[3] Quick facts Names, Identifiers ... ... Pyrazine and a variety of alkylpyrazines are flavor and aroma compounds found in baked and roasted goods.