3-Amino-6-(difluoromethyl)-2-(trifluoromethoxy)pyridine-5-acetonitrile
5-Amino-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetonitrile
4-Amino-3-(difluoromethyl)-6-(trifluoromethoxy)pyridine-2-acetonitrile
4-Amino-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine-3-acetonitrile