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