Used as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in the preparation of compounds targeting tyrosine kinases and other signaling proteins involved in tumor growth and proliferation. Its structure allows for easy modification, enabling the creation of diverse analogs for structure-activity relationship studies in drug discovery. Commonly employed in the manufacture of investigational oncology drugs and in the optimization of small molecule therapeutics with improved selectivity and potency.