4-Hydroxy-2-methoxy-3-(trifluoromethoxy)pyridine-6-carboxaldehyde
Methyl 4-hydroxy-2-methoxy-5-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 5-hydroxy-3-methoxy-2-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 3-hydroxy-5-methoxy-4-(trifluoromethoxy)pyridine-2-carboxylate