Methyl 3-fluoro-4-nitro-6-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 2-cyano-6-nitro-4-(trifluoromethoxy)pyridine-3-acetate
Methyl 3-fluoro-2-nitro-6-(trifluoromethoxy)pyridine-4-carboxylate
4-Fluoro-2-nitro-6-(trifluoromethoxy)-3-(trifluoromethyl)pyridine