Nitroso compounds are organic compounds that contain a nitroso group, which is represented as –NO. This group consists of a nitrogen atom bonded to an oxygen atom, and it is often attached to a carbon atom in a larger molecular structure. These compounds can be found in various forms, including nitrosamines, which are known for their potential carcinogenic properties. Nitroso compounds are typically formed through chemical reactions involving amines and nitrous acid. They are used in various applications, including the synthesis of dyes and pharmaceuticals. However, due to their potential health risks, the presence of nitroso compounds in food and the environment is closely monitored.