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