Used as a key intermediate in the synthesis of high-performance pigments and dyes, particularly in the production of naphthol-based azo pigments which exhibit excellent light and weather fastness. It is also employed in the development of fluorescent dyes and optical brighteners due to its conjugated aromatic structure and ability to form stable chromophores. Its hydroxy and amino functional groups allow for easy derivatization, making it valuable in the preparation of specialty polymers and photoactive materials. Additionally, it finds use in research for developing sensors and luminescent compounds.