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