TMX-4102 is a highly selective binder of phosphatidylinositol 5-phosphate 4-kinase Type II gamma (PIP4K2C). It demonstrates binding activity to PIP4K2C with a dissociation constant (KD) of 0.45 nM, and does not significantly affect other lipid and non-lipid kinases. By specifically binding to PIP4K2C, TMX-4102 regulates its scaffold function rather than its enzymatic activity. TMX-4102 serves as a tool molecule for studying the biological functions and potential therapeutic value of PIP4K2C.