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