4-Cyano-2-methyl-5-(trifluoromethoxy)pyridine-3-sulfonyl chloride
4-(Chloromethyl)-3-cyano-2-iodo-5-(trifluoromethoxy)pyridine
5-Cyano-3-methyl-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
4-Cyano-3-iodo-2-methoxy-5-(trifluoromethoxy)pyridine
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