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