Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and antimicrobial agents. Its structure allows for functionalization at multiple sites, making it valuable in medicinal chemistry for creating libraries of compounds in drug discovery. Commonly employed in cross-coupling reactions to introduce aryl or heteroaryl groups, enabling the construction of complex molecules with potential biological activity. Also utilized in research settings to develop fluorescent probes due to the inherent photophysical properties of the naphthyridine core.