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