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