2-(Chloromethyl)-3-(difluoromethyl)-4-fluoropyridine-5-acetonitrile
4-(Chloromethyl)-3-(difluoromethyl)-2-fluoro-5-(trifluoromethyl)pyridine
4-(Difluoromethyl)-6-fluoro-3-nitropyridine-2-sulfonamide
5-(Difluoromethyl)-3-fluoro-4-nitropyridine-2-sulfonamide