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