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