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