3-(Chloromethyl)-2-cyano-5-hydroxy-6-(trifluoromethoxy)pyridine
3-Chloro-2-(difluoromethyl)-6-methyl-5-(trifluoromethoxy)pyridine
3-(Chloromethyl)-2-cyano-4-hydroxy-5-(trifluoromethoxy)pyridine
6-(Chloromethyl)-2-cyano-4-hydroxy-3-(trifluoromethoxy)pyridine