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Medical Definition of Monoisonitrosoacetone
1. CH3CO-CH==NOH; propanone 1-oxine;a cholinesterase reactivator that can penetrate the blood-brain barrier readily and cause significant reactivation of phosphorylated acetylcholinesterase in the central nervous system; used to protect human beings and animals against otherwise lethal poisoning with organophosphorous anticholinesterase agents. Synonym: monoisonitrosoacetone, pyruvaldoxine. (05 Mar 2000)