Ethyl 3-(chloromethyl)-4-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-2-acetate
Ethyl 3-(chloromethyl)-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-6-acetate
Ethyl 2-(difluoromethyl)-6-nitropyridine-4-carboxylate
Ethyl 2-(difluoromethyl)-5-nitropyridine-4-carboxylate