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