1429179-07-6

IDH889 is a potent and selective inhibitors of IDH1. IDH899 shows IDH (R132H) IC50 = 20 nM; Cell 2-HG IC50 = 14 nM. IDH889 demonstrates significantly improved plasma exposure in mice vs IDH662 (AUC 3.6 μM·h, Cmax 1.7 μM at 10 mg/kg; AUC 55.5 μM·h, Cmax 14.2 μM at 100 mg/kg). IDH889 also has excellent permeability and no efflux in the Caco-2 and human MDR1-MDCK cell lines, supporting the hypothesis that potent inhibition of mutant IDH1 function by binding at the allosteric binding site is compatible with brain penetration.