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