3-Nitro-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-carboxaldehyde
6-Nitro-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-carboxaldehyde
3-Nitro-4-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-2-carboxaldehyde
6-Nitro-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-carboxaldehyde