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