Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of steroid receptor modulators and anti-inflammatory agents. Its structure allows for functionalization at multiple sites, making it valuable in medicinal chemistry for building complex indene-based compounds. It is also employed in research settings to design novel bioactive molecules and probe biological pathways involving hormone receptors. Due to its chlorine substituent and ketone functionality, it serves as a versatile building block in cross-coupling reactions and nucleophilic substitutions.