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