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