4-Hydroxy-5-methyl-3-(trifluoromethoxy)pyridine-2-carboxaldehyde
3-Fluoro-5-methoxy-2-(trifluoromethoxy)pyridine-4-carboxaldehyde
Methyl 2-fluoro-3-methoxy-4-(trifluoromethoxy)pyridine-6-carboxylate
5-Fluoro-4-methoxy-3-(trifluoromethoxy)pyridine-2-carboxaldehyde