Ethyl 4-bromo-5-(chloromethyl)-2-(difluoromethyl)pyridine-3-acetate
Methyl 2-bromo-3-(bromomethyl)-6-(difluoromethyl)pyridine-5-carboxylate
Ethyl 3-bromo-5-(chloromethyl)-4-(difluoromethyl)pyridine-2-acetate
3-Bromo-6-(bromomethyl)-2-(difluoromethyl)pyridine-4-carboxylic acid