2-((1H-Pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-fluoro-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide

2-((1H-Pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-fluoro-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide is used in the venetoclax method development and validation.