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