N-Iodosuccinimide is widely used in organic synthesis as a versatile iodinating agent, particularly for the iodination of aromatic compounds, alkenes, and alkynes. It is preferred for its mild reaction conditions and high selectivity, making it valuable in the preparation of iodinated intermediates for pharmaceuticals and agrochemicals. Additionally, it serves as an oxidizing agent in various transformations, such as the conversion of alcohols to carbonyl compounds. Its application extends to polymer chemistry, where it is utilized to modify polymers through iodination, enhancing their properties for specific industrial uses.