Used primarily as an intermediate in organic synthesis, particularly in the preparation of agrochemicals and pharmaceuticals. Its sulfonyl chloride group readily reacts with nucleophiles, making it valuable for introducing sulfonyl functionalities into target molecules. It is also employed in the synthesis of sulfonamides, which are key structural motifs in many bioactive compounds. Due to the presence of both electron-withdrawing nitro and sulfonyl groups, it participates in electrophilic aromatic substitution and other transformation reactions under controlled conditions. Commonly used in research laboratories for developing new chemical entities with potential therapeutic or pesticidal activity.