Used as a key intermediate in the synthesis of bioactive molecules and pharmaceuticals, particularly in the development of antimicrobial and antitumor agents. It serves as a building block in the preparation of phenazine-based dyes and pigments, which find use in specialty inks and coatings. Also employed in research on electron transfer processes due to its redox-active structure, making it relevant in the design of organic electronic materials and sensors. Its derivatives are studied for potential application in photodynamic therapy and as fluorescent probes in biological imaging.