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