Ethyl 3-(difluoromethyl)-2-methoxy-5-(trifluoromethyl)pyridine-4-acetate
4-(Chloromethyl)-3-(difluoromethyl)-2-methyl-6-nitropyridine
4-(Chloromethyl)-6-(difluoromethyl)-2-methyl-3-nitropyridine
4-(Chloromethyl)-6-(difluoromethyl)-3-methyl-2-nitropyridine