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