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