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