Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and antiviral agents. Its structure supports the design of bioactive molecules due to its ability to mimic peptide bonds and interact with enzyme active sites. Commonly employed in medicinal chemistry for constructing heterocyclic frameworks in drug discovery programs. Also utilized in the preparation of fluorescent probes and optoelectronic materials owing to its conjugated system and redox properties.