Anthracen-9-ol is primarily used as an intermediate in the synthesis of anthraquinone derivatives, which are important in the production of dyes and pigments for textiles, plastics, and inks. It serves as a building block in organic synthesis, particularly in the development of photochromic and electroactive materials. Due to its aromatic structure and reactivity, it is also employed in research related to organic semiconductors and luminescent compounds. Additionally, it finds use in the preparation of fluorescent probes and sensors, where its optical properties can be exploited for detecting specific analytes in environmental and biological systems. Its role in photochemical studies makes it valuable for developing light-responsive materials and studying energy transfer processes.