Methyl 3-(chloromethyl)-5-hydroxy-4-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 5-(chloromethyl)-4-hydroxy-2-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 2-(fluoromethyl)-4-hydroxy-6-(trifluoromethoxy)pyridine-3-acetate
Methyl 3-(chloromethyl)-4-hydroxy-5-(trifluoromethoxy)pyridine-2-carboxylate