Used in pharmaceutical research as a key intermediate in the synthesis of kinase inhibitors, particularly for targeting protein kinases involved in inflammatory diseases and cancer. Its structure allows for selective modification to enhance binding affinity and pharmacokinetic properties. Commonly employed in the development of small-molecule therapeutics due to its ability to cross cell membranes and modulate intracellular signaling pathways. Also utilized in structure-activity relationship (SAR) studies to optimize drug candidates targeting tyrosine kinases and serine/threonine kinases.