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