5-Amino-3-mercaptopicolinonitrile
2-Amino-6-(bromomethyl)-3-(difluoromethyl)pyridine-4-acetonitrile
6-(Difluoromethyl)-4-iodo-2-(trifluoromethyl)pyridine-3-methanol
6-Chloro-4-iodo-2-(trifluoromethoxy)pyridine-3-acetic acid
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