Ethyl 2-bromo-5-(difluoromethyl)-4-nitropyridine-3-carboxylate
6-Bromo-3-(difluoromethyl)-4-methylpyridine-2-sulfonyl chloride
2-Bromo-5-(difluoromethyl)-3-methylpyridine-6-sulfonyl chloride
Methyl 6-bromo-3-(chloromethyl)-4-(difluoromethyl)pyridine-2-carboxylate