Ethyl 5-hydroxy-4-nitro-2-(trifluoromethoxy)pyridine-3-acetate
Methyl 4-fluoro-3-(fluoromethyl)-2-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 2-fluoro-4-(fluoromethyl)-5-(trifluoromethoxy)pyridine-3-carboxylate
4-Hydroxy-6-nitro-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride