Methyl 3-fluoro-2-nitro-6-(trifluoromethoxy)pyridine-4-carboxylate
4-Fluoro-2-nitro-6-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
Methyl 2-cyano-5-nitro-4-(trifluoromethoxy)pyridine-3-acetate
4-Fluoro-2-nitro-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine