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