Methyl 3-bromo-4-(difluoromethyl)pyridine-5-acetate
Ethyl 2-(chloromethyl)-5-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 3-bromo-2-(difluoromethyl)pyridine-5-acetate
Ethyl 6-(chloromethyl)-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylate