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