P32/98 hemifumarate is primarily used in the field of medical research, particularly in the study of neurodegenerative diseases. It functions as a potent and selective inhibitor of glycogen synthase kinase-3 (GSK-3), an enzyme implicated in the pathogenesis of conditions such as Alzheimer's disease and diabetes. By inhibiting GSK-3, it helps in understanding the molecular mechanisms underlying these diseases and aids in the development of potential therapeutic strategies. Additionally, it is utilized in biochemical assays to explore cellular signaling pathways and protein interactions related to GSK-3 activity. Its application extends to preclinical studies where it serves as a valuable tool for evaluating the efficacy of novel drug candidates targeting GSK-3-related pathways.