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