Used in the development of fluorescent dyes for biological staining, aiding in the visualization of cellular structures under microscopy. Plays a role in chemiluminescence assays, particularly in immunoassays for detecting biomarkers in medical diagnostics. Applied in the synthesis of acridine-based drugs, which are explored for their potential in treating parasitic infections and certain cancers. Also utilized in research as a precursor for synthesizing organic compounds with photophysical properties, useful in materials science and optoelectronics.