MK-4827 (Niraparib) is an inhibitor of PARP 1 and 2 with IC50 = 3.8 and 2.1 nM, respectively, currently in clinical trials. In a whole cell assay, it inhibited PARP activity with EC50 = 4 nM and inhibited proliferation of cancer cells with mutant BRCA-1 and BRCA-2 with CC50 in the 10-100 nM range. MK-4827 was well tolerated in vivo and demonstrated efficacy as a single agent in a xenograft model of BRCA-1 deficient cancer.
>99 % by HPLC, Chiral purity100%
Room temperature for short term or -20ºC for 2 years.