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Pyrazine is a
heterocyclic aromatic organic compound with the
chemical formula C4H4N2. It is a
symmetrical molecule with
point group D2h.
Pyrazine is less...
- also
known as
Grindstaff pyrazine) is a
methoxypyrazine that is very
similar to
isopropyl methoxy pyrazine except that the
alkyl side-group contains...
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heterocyclic compound containing a ring
complex made up of a
benzene ring and a
pyrazine ring. It is
isomeric with
other naphthyridines including quinazoline, phthalazine...
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flavour is most
widely recognised,
caused by
pyrazines,
which are more
prevalent in under-ripened grapes.
Pyrazine compounds are
present in all
Cabernet Sauvignon...
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nitrogen atoms at
positions 1 and 3 in the ring.: 250 The
other diazines are
pyrazine (nitrogen
atoms at the 1 and 4 positions) and
pyridazine (nitrogen atoms...
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highly odorous metabolites from an actinomycete: 2-Isopropyl-3-methoxy-
pyrazine, methylisoborneol, and geosmin.
Nancy N. Gerber,
Journal of
Chemical Ecology...
- It is
isomeric with two
other diazine (C4H4N2) rings,
pyrimidine and
pyrazine.
Pyridazines are rare in nature,
possibly reflecting the
scarcity of naturally...
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hydroxide and 2,3,5-Trimethyl-5,6-dihydro-
pyrazine is 3:1, the m****
ratio of
ethanol to 2,3,5-trimethyl-5,6-dihydro-
pyrazine 10:1,reaction
temperature 68 °C, reaction...
- This is also a
naturally occurring compound in
Sauvignon grapes, and so
pyrazine taint has been
known to make
Rieslings taste like
Sauvignon blanc.[citation...
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mashing process,
particularly through formation of 2-furanmethanol and
pyrazines imparting nutty or
cereal characteristics contributes to the
baked bread...
