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