5-Nitro-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-carboxamide
3-Nitro-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-6-carboxamide
3-Nitro-2-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-5-carboxamide
3-Nitro-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-carboxamide