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