2-Nitro-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-4-sulfonamide
3-Nitro-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-sulfonyl chloride
4-Nitro-2-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-sulfonyl chloride
5-Nitro-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-sulfonyl chloride