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