Used as a key intermediate in the synthesis of sulfa drugs and other biologically active sulfonamide compounds. Its reactive sulfonyl chloride group enables easy attachment to amines, making it valuable in pharmaceutical research for developing new antimicrobial and anti-inflammatory agents. Also employed in agrochemicals to create herbicides and pesticides due to its ability to modify molecular structures for enhanced activity. Its nitrile group adds versatility in further chemical transformations, allowing use in multi-step organic syntheses.