5-Hydroxy-3-methyl-4-(trifluoromethoxy)pyridine-2-carboxaldehyde
6-Fluoro-2-methoxy-4-(trifluoromethoxy)pyridine-3-carboxaldehyde
3-Hydroxy-5-methyl-2-(trifluoromethoxy)pyridine-4-carboxaldehyde
2-Fluoro-4-methoxy-3-(trifluoromethoxy)pyridine-6-acetic acid