LDC203974 is primarily used as a potent and selective inhibitor in biochemical research, particularly in studies involving kinase signaling pathways. It serves as a valuable tool compound for probing the function of specific kinases involved in cellular proliferation and survival, making it relevant in oncology research. Its high selectivity allows scientists to dissect complex signaling networks with minimal off-target effects, supporting the development of targeted cancer therapies. Additionally, LDC203974 is utilized in preclinical studies to validate kinase targets and assess therapeutic potential in disease models, especially in cancers driven by dysregulated kinase activity.