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