Ethyl 2-bromo-4-(difluoromethyl)-6-nitropyridine-3-carboxylate
6-Chloro-4-(difluoromethyl)-2-fluoro-3-(trifluoromethyl)pyridine
Ethyl 2-bromo-3-(difluoromethyl)-6-nitropyridine-4-carboxylate
3-Chloro-6-(chloromethyl)-2-(difluoromethyl)-4-fluoropyridine