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