Used in pharmaceutical research as a key intermediate in the synthesis of kinase inhibitors, particularly for targeting cancer-related proteins such as PI3K and mTOR. Its structure supports high binding affinity to enzyme active sites, making it valuable in developing antitumor agents. Also explored in the design of selective inhibitors for inflammatory and neurological disorders due to its ability to cross the blood-brain barrier. Commonly modified to improve solubility and metabolic stability in drug candidates.