2-Cyano-5-(difluoromethyl)-6-nitro-3-(trifluoromethoxy)pyridine
2-Chloro-3-iodo-6-(trifluoromethoxy)pyridine-5-acetonitrile
6-Cyano-4-(difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine
6-Cyano-2-iodo-3-(trifluoromethoxy)pyridine-4-carboxylic acid
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