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Pronunciation varies by accent · noun
(organic chemistry) A diazine in which the two nitrogen atoms are in the para- positions; many of its derivatives are pharmaceuticals..
Use pyrazine when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Pyrazine means (organic chemistry) A diazine in which the two nitrogen atoms are in the para- positions; many of its derivatives are pharmaceuticals..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use pyrazine where its definition matches the intended context.
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