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