PF-9366 is primarily utilized in the field of biomedical research, particularly in the study of cellular signaling pathways. It functions as a selective inhibitor of certain kinases, making it a valuable tool for understanding the role of these enzymes in various biological processes. Researchers employ PF-9366 to investigate its effects on cell proliferation, differentiation, and apoptosis, which can provide insights into the mechanisms underlying diseases such as cancer. Additionally, it is used in preclinical studies to evaluate its potential therapeutic efficacy and to develop targeted treatments for kinase-related disorders. Its application extends to drug discovery, where it aids in the identification and optimization of novel compounds for therapeutic use.