Used as a key intermediate in the synthesis of photochromic compounds, particularly in the development of dyes and pigments that change color upon exposure to light. It plays an important role in the production of high-performance optical materials such as lenses with light-adaptive properties. Also utilized in the preparation of fluorescent probes and sensors due to its ability to form stable xanthene-based structures with strong emission characteristics. Its bromo functional group allows for easy coupling in palladium-catalyzed reactions, making it valuable in organic synthesis for building complex aromatic systems.