Methyl 2-bromo-4-(difluoromethyl)-5-nitropyridine-3-carboxylate
4-Bromo-5-(difluoromethyl)-2-methylpyridine-3-carbonyl chloride
Methyl 2-bromo-4-(difluoromethyl)-3-nitropyridine-5-carboxylate
4-Bromo-5-(difluoromethyl)-3-methylpyridine-2-carbonyl chloride