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