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