Ethyl 2-methoxy-6-nitro-4-(trifluoromethoxy)pyridine-3-acetate
3-Methoxy-6-nitro-2-(trifluoromethoxy)pyridine-5-carboxaldehyde
Ethyl 2-methoxy-5-nitro-4-(trifluoromethoxy)pyridine-3-acetate
5-Methoxy-2-nitro-3-(trifluoromethoxy)pyridine-6-carboxaldehyde