4-Chloro-5-cyano-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
4-Chloro-6-cyano-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
4-Chloro-2-cyano-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
5-Chloro-4-cyano-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine