4-(Chloromethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine-5-acetonitrile
5-(Chloromethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine-2-acetonitrile
4-(Fluoromethyl)-2-iodo-6-methyl-3-(trifluoromethoxy)pyridine
3-(Fluoromethyl)-5-iodo-2-methyl-6-(trifluoromethoxy)pyridine