Methyl 5-bromo-4-(difluoromethyl)-3-nitropyridine-2-carboxylate
2-Bromo-3-(bromomethyl)-6-(difluoromethyl)-4-methoxypyridine
Methyl 3-bromo-2-(difluoromethyl)-6-nitropyridine-5-carboxylate
Methyl 3-bromo-2-(difluoromethyl)-5-nitropyridine-6-carboxylate