Used in pharmaceutical research as an intermediate for synthesizing biologically active compounds, particularly in the development of histamine H3 receptor antagonists. It serves as a key building block in creating molecules with potential neurological and cognitive effects. Its structure supports the design of drugs targeting central nervous system disorders, including attention deficit, sleep disorders, and neurodegenerative diseases. Also employed in the preparation of kinase inhibitors and immunomodulatory agents. Commonly utilized in medicinal chemistry for structure-activity relationship (SAR) studies due to its rigid, fused heterocyclic core.