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