Used as a spin trap in electron paramagnetic resonance (EPR) spectroscopy to detect and identify short-lived free radicals in biological systems, chemical reactions, and materials science. It forms stable adducts with reactive oxygen species such as superoxide and hydroxyl radicals, allowing researchers to study oxidative stress and radical-mediated processes in cells, tissues, and pharmaceutical formulations. Commonly applied in studies of inflammation, neurodegeneration, and antioxidant efficacy. Also used in polymer chemistry to investigate radical initiation and degradation mechanisms.