Used as a spin trap in electron paramagnetic resonance (EPR) spectroscopy to detect and identify short-lived free radicals in biological systems. It forms stable adducts with reactive oxygen species such as superoxide and hydroxyl radicals, allowing researchers to study oxidative stress in cells, tissues, and biochemical reactions. Commonly applied in studies of inflammation, neurodegenerative diseases, and antioxidant efficacy. Also used in environmental chemistry to monitor radical generation in photochemical and redox processes.