Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of central nervous system (CNS) agents and anticonvulsant drugs. Its structure allows for functionalization at multiple sites, making it valuable in medicinal chemistry for building complex heterocyclic systems. Commonly employed in research settings to design analogs of bioactive molecules, especially those targeting neurological disorders. Also utilized in the preparation of specialty organic compounds where a fused thiophene ring system is required for electronic or optical properties.