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Medical Dictionary

pyrazolone

noun py·raz·o·lone \ -ˌlōn \

medical Definition of pyrazolone

1 :any of three isomeric carbonyl compounds C₃H₄N₂O derived from pyrazoline

2 :any of various derivatives of the pyrazolones some of which (as antipyrine) have been used as analgesics and antipyretics

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