1,8-Naphthosultone is primarily used in the synthesis of organic compounds, particularly in the development of dyes and pigments. Its unique structure allows it to act as a key intermediate in creating complex molecules with specific color properties, making it valuable in the textile and printing industries. Additionally, it finds application in the production of fluorescent materials, where its ability to absorb and emit light is utilized in sensors and imaging technologies. The compound is also explored in pharmaceutical research for its potential role in designing drug molecules, owing to its reactive sultone group, which can be modified to enhance biological activity.