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