3-Chloro-2-hydroxy-5-nitro-4-(trifluoromethoxy)pyridine
4-Chloro-5-cyano-2-methoxy-3-(trifluoromethoxy)pyridine
4-Chloro-3-cyano-5-methoxy-2-(trifluoromethoxy)pyridine
2-Chloro-4-cyano-5-(fluoromethyl)-3-(trifluoromethoxy)pyridine
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