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