2-Chloro-6-(difluoromethyl)-4-nitro-3-(trifluoromethyl)pyridine
2-Chloro-3-(difluoromethyl)-5-nitro-4-(trifluoromethyl)pyridine
4-Chloro-6-(chloromethyl)-2-(difluoromethyl)-3-nitropyridine
4-Chloro-6-(difluoromethyl)-3-fluoropyridine-2-carbonyl chloride