Used primarily as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of selective serotonin reuptake inhibitors (SSRIs) and other central nervous system (CNS) active agents. Its structure supports the creation of bioactive molecules due to the presence of both piperazine and nitroaryl moieties, which are common in drugs targeting neurological pathways. It is also employed in the preparation of novel receptor ligands for research in neuropharmacology. Due to its reactivity, it serves as a building block in medicinal chemistry for constructing more complex drug candidates.