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