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Pronunciation varies by accent · noun
(organic chemistry) The phenyl derivative of hydrazine C₆H₅-NH-NH₂; it is used in the synthesis of indoles, and in the analysis of sugars etc..
Use phenylhydrazine when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Phenylhydrazine means (organic chemistry) The phenyl derivative of hydrazine C₆H₅-NH-NH₂; it is used in the synthesis of indoles, and in the analysis of sugars etc..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use phenylhydrazine where its definition matches the intended context.
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