4-Cyano-3-(difluoromethyl)-2-methyl-6-(trifluoromethoxy)pyridine
3-Bromo-4-chloro-5-cyano-2-(difluoromethyl)pyridine
6-Methoxy-3-nitro-4-(trifluoromethoxy)pyridine-2-acetonitrile
2-Iodo-4-nitro-3-(trifluoromethoxy)pyridine-6-carboxylic acid
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