Ethyl 3-bromo-4-(difluoromethyl)-2-methylpyridine-5-carboxylate
Methyl 6-bromo-2-(bromomethyl)-3-(difluoromethyl)pyridine-4-acetate
Ethyl 3-bromo-2-(difluoromethyl)-6-methylpyridine-4-carboxylate
Methyl 6-bromo-2-(bromomethyl)-4-(difluoromethyl)pyridine-3-acetate