2-Cyano-3-nitro-6-(trifluoromethoxy)pyridine-4-carbonyl chloride
2-Cyano-3-nitro-5-(trifluoromethoxy)pyridine-4-carbonyl chloride
2-Cyano-3-nitro-4-(trifluoromethoxy)pyridine-5-carbonyl chloride
3-Cyano-6-methyl-2-(trifluoromethoxy)pyridine-5-carbonyl chloride