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