Ethyl 2-bromo-3-(difluoromethyl)-5-nitropyridine-4-carboxylate
3-Bromo-6-(chloromethyl)-2-(difluoromethyl)pyridine-4-carboxylic acid
Ethyl 2-bromo-3-(difluoromethyl)-4-nitropyridine-5-carboxylate
3-Bromo-6-(chloromethyl)-4-(difluoromethyl)pyridine-2-carboxylic acid