4-(Difluoromethyl)-3-nitro-2-(trifluoromethyl)pyridine-6-sulfonamide
3-(Difluoromethyl)-2-nitro-4-(trifluoromethyl)pyridine-5-carbonyl chloride
2-Nitro-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-3-carboxylic acid
2-Nitro-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-5-carboxylic acid