Used in pharmaceutical research as a key intermediate in the synthesis of kinase inhibitors, particularly in the development of targeted cancer therapies. Its fluorinated isoquinoline core enhances binding selectivity and metabolic stability in drug candidates. Also explored in the design of CNS-active compounds due to its ability to cross the blood-brain barrier. Commonly employed in structure-activity relationship (SAR) studies to optimize potency and pharmacokinetic properties in medicinal chemistry programs.