Used as an intermediate in the synthesis of dyes and pigments, particularly for azo dyes that provide bright and stable colors in textiles and inks. Also serves as a building block in the production of certain pharmaceuticals and agrochemicals due to its reactive aromatic structure. Its chlorinated naphthol framework allows for further chemical modifications, making it valuable in organic synthesis and research. Additionally, it can be employed in the development of fluorescent probes and sensors owing to the inherent fluorescence of naphthol derivatives when properly substituted.