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