Used as a catalyst in selective oxidation reactions, particularly in the conversion of alcohols to carbonyl compounds such as aldehydes and ketones. It enables efficient and mild oxidation under environmentally friendly conditions, often in combination with co-catalysts like sodium hypochlorite or bleach. Commonly applied in fine chemical and pharmaceutical synthesis where high selectivity and minimal byproducts are required. Also utilized in polymer chemistry to control oxidative degradation and stabilize radical reactions. Its role as a nitroxyl radical allows it to mediate oxidation processes reversibly, making it valuable in catalytic cycles that require sustainable and recyclable systems.