6-Chloro-4-hydroxy-2-nitro-3-(trifluoromethoxy)pyridine
2-Cyano-3-(fluoromethyl)-6-hydroxy-5-(trifluoromethoxy)pyridine
4-(Chloromethyl)-3-cyano-5-hydroxy-2-(trifluoromethoxy)pyridine
5-(Chloromethyl)-4-cyano-2-hydroxy-3-(trifluoromethoxy)pyridine
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