Methyl 2-fluoro-4-nitro-6-(trifluoromethoxy)pyridine-3-carboxylate
2-Fluoro-6-nitro-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine
Methyl 2-fluoro-3-nitro-6-(trifluoromethoxy)pyridine-4-carboxylate
4-Cyano-5-nitro-2-(trifluoromethoxy)pyridine-3-acetic acid