1187594-13-3

Barretinib intermediate 2 2-[1-ethylsulfonyl-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)pyrazol-1-yl]azetidin-3-yl]acetonitrile (trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl)azetidin-3-yl)acetonitrile 2-[1-ethanesulfonyl-3-[4-(7-[(2-(trimethylsilyl)ethoxy)methyl]-7H-pyrrolo[2,3-d]pyrimidine-4-yl)-1H-yl]azetidin-3-yl]acetonitrile 3-Azetidineacetonitrile, 1-(ethylsulfonyl)-3-[4-[7-[[2-(trimethylsilyl)ethoxy]methyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-1H-pyrazol-1-yl]- 2-(1-(ethylsulfonyl)-3-(4-(7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl)azetidin-3-yl)acetonitrile 2-[1-ethanesulfonyl-3-[4-(7-[(2-(trimethylsilyl)ethoxy)methyl]-7H-pyrrolo[2,3-d]pyrimidine-4-yl)-1H-pyrazol-1-yl]azetidin-3-yl]acetonitrile