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