Ethyl 4-bromo-2-(bromomethyl)-6-(difluoromethyl)pyridine-3-carboxylate
3-Bromo-5-(difluoromethyl)-2-methoxypyridine-6-sulfonyl chloride
3-Bromo-4-(difluoromethyl)-6-methoxypyridine-2-sulfonyl chloride
Methyl 2-bromo-5-(bromomethyl)-3-(difluoromethyl)pyridine-4-acetate