Used primarily as a key intermediate in the synthesis of selective estrogen receptor modulators (SERMs), particularly in the development of pharmaceutical agents for the treatment of breast cancer. Its structural features allow for high affinity binding to estrogen receptors, enabling modulation of hormonal activity in target tissues. It is also employed in research settings for developing new compounds with improved bioavailability and tissue selectivity. Due to its fluorinated aromatic group, it exhibits enhanced metabolic stability, making it valuable in medicinal chemistry for optimizing drug candidates.