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