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