4-Fluoro-3-(trifluoromethoxy)pyridine-5-carboxaldehyde
2-(Fluoromethyl)-3-methyl-4-(trifluoromethoxy)pyridine-6-carboxylic acid
4-Fluoro-2-(trifluoromethoxy)pyridine-5-carboxaldehyde
3-(Fluoromethyl)-6-methyl-2-(trifluoromethoxy)pyridine-5-carboxaldehyde