(S,R)-WT IDH1 Inhibitor 2 is a selective and potent mutant IDH1 inhibitor that inhibits R132G (IC50: 2.9 nM), R132C (IC50: 3.8 nM), R132H (IC50: 4.6 nM) and WT IDH1 (IC50: 46 nM) with 100-fold higher selectivity than IDH2. 100-fold higher selectivity than IDH2. (S,R)-WT IDH1 Inhibitor 2 is investigated in acute myeloid leukemia (AML) and other cancers for its ability to induce intracellular 2-HG reduction, failure of myeloid differentiation block, and induction of granulocyte differentiation at the level of leukemia mother cells and more immature stem cells.