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