Ethyl 4-fluoro-2-nitro-3-(trifluoromethoxy)pyridine-6-acetate
Methyl 2-hydroxy-4-methyl-6-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 3-fluoro-4-nitro-2-(trifluoromethoxy)pyridine-6-acetate
Ethyl 2-fluoro-6-nitro-5-(trifluoromethoxy)pyridine-3-acetate