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