pyrazolone
/pʌɪˈrazələʊn/ /pɪˈrazələʊn/Chemistry
noun
Any of a group of compounds which are keto derivatives of pyrazolines; a substituted derivative of such a compound, especially one used as an azo dye or as an anti-inflammatory or antipyretic drug.
- The chief pyrazolone (more fully 5-pyrazolone), NH—N=CH—CH2CO, is a weakly acidic, crystalline solid..
Origin
Late 19th century; earliest use found in Journal of the Chemical Society. From pyrazole + -one, after German Pyrazolon.
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