Nitroxides are a class of chemical compounds that contain a nitrogen atom bonded to an oxygen atom. They are often used in various scientific fields, including chemistry and biology, due to their unique properties. Nitroxides can act as stable free radicals, which makes them useful in studying reactions involving free radicals and in applications like spin labeling in magnetic resonance imaging. These compounds are also explored for their potential in medical applications, such as in antioxidant therapies. Their ability to scavenge harmful free radicals can help protect cells from oxidative stress, which is linked to various diseases, including cancer and neurodegenerative disorders.