Used primarily as an intermediate in organic synthesis, especially in the preparation of sulfonamide derivatives. Its reactivity allows it to introduce sulfonyl functional groups into complex molecules, making it valuable in pharmaceutical and agrochemical industries. Commonly employed in the development of bioactive compounds, including potential drug candidates and dyes. The presence of both methoxy and nitro groups enhances its utility in directed electrophilic substitution reactions, enabling selective modifications in multi-step syntheses.