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