2-Chloro-5-(chloromethyl)-3-nitro-4-(trifluoromethoxy)pyridine
2-Cyano-4-(fluoromethyl)-3-methyl-5-(trifluoromethoxy)pyridine
4-Cyano-6-(fluoromethyl)-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
2-Cyano-3-(fluoromethyl)-5-methyl-6-(trifluoromethoxy)pyridine