Used as an intermediate in pharmaceutical synthesis, particularly in the development of central nervous system agents. It serves as a building block for dopamine receptor ligands and serotonin modulators due to its piperazine-benzaldehyde structure. Commonly employed in the preparation of bioactive molecules and receptor-targeted compounds. Also utilized in the synthesis of fluorescent probes and imaging agents because of its aldehyde functional group, which allows for easy conjugation with amines and hydrazines. Its structural flexibility makes it valuable in medicinal chemistry for structure-activity relationship studies.