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