Used primarily as a key intermediate in pharmaceutical synthesis, this compound enables the introduction of sulfonyl chloride functional groups into complex molecules. Its reactivity makes it valuable for modifying bioactive structures, particularly in the development of drug candidates targeting central nervous system disorders. The cyano and sulfonyl chloride groups offer dual sites for further chemical transformations, allowing for versatile derivatization in medicinal chemistry workflows. It is especially useful in creating protease inhibitors and receptor modulators due to its ability to enhance binding affinity and metabolic stability in lead compounds.