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What is 4-Aminoantipyrine?

    4-Amino-1,5-dimethyl-2-phenyl-3H-pyrazolone. A metabolite of AMINOPYRINE with analgesic and anti-inflammatory properties. It is used as a reagent for biochemical reactions producing peroxides or phenols. Ampyrone stimulates liver microsomes and is also used to measure extracellular water.