4-Bromo-2-chloro-5-(trifluoromethoxy)pyridine-3-carboxaldehyde
3-(Chloromethyl)-2-methyl-5-(trifluoromethoxy)pyridine-6-carboxaldehyde
4-Fluoro-3-methyl-2-(trifluoromethoxy)pyridine
3-(Chloromethyl)-2-methyl-4-(trifluoromethoxy)pyridine-5-carboxaldehyde