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