2-Chloro-4-(chloromethyl)-5-cyano-3-(trifluoromethoxy)pyridine
6-Bromo-3-(fluoromethyl)-2-methyl-4-(trifluoromethoxy)pyridine
2-Chloro-3-(chloromethyl)-6-cyano-5-(trifluoromethoxy)pyridine
2-Bromo-5-(fluoromethyl)-3-methyl-6-(trifluoromethoxy)pyridine