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