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