2-Cyano-5-hydroxy-3-(trifluoromethoxy)pyridine
3-Cyano-2-iodo-5-(trifluoromethoxy)pyridine
5-Cyano-2-fluoro-4-(trifluoromethoxy)pyridine
4-Cyano-3-fluoro-5-(trifluoromethoxy)pyridine
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