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