3-Methoxy-5-nitro-2-(trifluoromethoxy)pyridine-4-carboxaldehyde
3-Iodo-5-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-2-carboxaldehyde
5-Methoxy-4-nitro-3-(trifluoromethoxy)pyridine-2-carboxaldehyde
2-Iodo-6-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-5-carboxaldehyde