3-Cyano-2-hydroxy-4-(trifluoromethoxy)pyridine
4-Cyano-2-fluoro-3-(trifluoromethoxy)pyridine
2-Cyano-4-iodo-6-(trifluoromethoxy)pyridine
6-Cyano-2-fluoro-3-(trifluoromethoxy)pyridine
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