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piperazine
CIDE DICTIONARY
piperazine, n. [Piperidine + azote + -ine.].
A crystalline substance, (C2H4NH)2 , formed by action of ammonia on ethylene bromide, by reduction of pyrazine, etc. It is a strong base, and is used as a remedy for gout. [Webster 1913 Suppl.]
For further exploring for "piperazine" in Webster Dictionary Online