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