Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. Shows activity in research settings for modulating enzyme function related to cell proliferation. Also employed in the preparation of fluorescent probes due to its quinolinone core, which can be tailored for specific detection in biological systems. Investigated for potential use in central nervous system drug candidates owing to its ability to cross the blood-brain barrier in preclinical models.