Used in organic synthesis as an intermediate for pharmaceuticals and biologically active compounds. Acts as a building block in the development of sulfonamide-based drugs, which may exhibit antimicrobial, anti-inflammatory, or antitumor properties. Employed in research settings for the preparation of receptor ligands, particularly in neuroscience-related studies due to its structural similarity to known neuroactive agents. Also utilized in the design of enzyme inhibitors where sulfonyl and piperazine moieties are pharmacophoric elements. Common in medicinal chemistry for structure-activity relationship (SAR) studies involving aromatic sulfonyl derivatives.