Used in the synthesis of antimalarial drugs, particularly as a key intermediate in the production of acridine-based pharmaceuticals. It serves as a building block in medicinal chemistry for developing compounds with antimicrobial and anticancer properties. Also employed in research for DNA intercalation studies due to its planar structure, which allows it to insert between DNA base pairs, making it valuable in biochemical assays and fluorescence-based applications. Its derivatives are explored for use in photodynamic therapy and as fluorescent probes in cellular imaging.