6-Cyano-4-hydroxy-3-(trifluoromethoxy)pyridine-2-acetonitrile
3-Chloro-2-methyl-6-(trifluoromethoxy)pyridine-4-acetonitrile
3-Chloro-6-hydroxy-2-nitro-5-(trifluoromethoxy)pyridine
2-Cyano-3-hydroxy-5-(trifluoromethoxy)pyridine-6-acetonitrile
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