Used primarily as an intermediate in organic synthesis, particularly in the pharmaceutical and agrochemical industries. Its sulfonyl chloride group readily reacts with amines to form sulfonamides, which are key structural motifs in many biologically active compounds. The cyano and methoxy groups enhance reactivity and influence electronic properties, making this compound valuable in constructing complex molecules. It is also employed in the development of dyes and functional materials where precise molecular architecture is required. Due to its sensitivity to moisture, it is typically handled under anhydrous conditions to maintain reactivity.