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