Used as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of kinase inhibitors and antimicrobial compounds. Its structure supports functionalization at multiple sites, making it valuable in medicinal chemistry for constructing nitrogen-containing heterocycles. Commonly employed in cross-coupling reactions such as Suzuki or Buchwald-Hartwig to introduce aryl or amino groups, enabling the creation of diverse compound libraries for biological screening. Also utilized in the preparation of fluorescent probes due to the inherent photophysical properties of the naphthyridine core.