Used as a key intermediate in the synthesis of quinolone antibiotics, particularly in the development of antibacterial agents targeting DNA gyrase and topoisomerase IV. Its structure enables the formation of bioactive molecules with activity against Gram-negative and some Gram-positive bacteria. Also employed in the preparation of kinase inhibitors and other pharmaceuticals where the naphthyridine core enhances binding affinity to enzyme active sites. Additionally, it serves as a building block in medicinal chemistry for designing compounds with antiviral and anticancer properties.