4-Amino-5-mercaptonicotinonitrile
4-Chloro-2-hydroxy-3-iodo-5-(trifluoromethoxy)pyridine
4-(Bromomethyl)-3-cyano-5-(difluoromethyl)pyridine
2-(Chloromethyl)-6-cyano-5-(trifluoromethoxy)pyridine-3-methanol
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