Methyl 3-(chloromethyl)-2-hydroxy-6-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 4-(fluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-6-acetate
Methyl 3-(chloromethyl)-2-hydroxy-4-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 4-(fluoromethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine-6-acetate