Used as a reactive metabolite in drug metabolism studies, particularly in research related to acetaminophen (paracetamol) toxicity. It plays a key role in understanding liver damage mechanisms caused by drug overdose. Widely employed in biochemical assays to evaluate antioxidant defenses, especially glutathione depletion and cellular detoxification pathways. Also utilized in the development and testing of antidotes like N-acetylcysteine, which neutralizes its toxic effects. Common in toxicology research and pharmaceutical safety evaluation.