4-Bromo-3-mercaptopicolinonitrile
6-Methyl-2-(trifluoromethyl)pyridine-3-carbonyl chloride
2,6-Dichloro-3-fluoro-5-(trifluoromethoxy)pyridine
5-(Difluoromethyl)-3,4-diiodo-2-methoxypyridine
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