4-(Bromomethyl)-5-cyano-2-(difluoromethyl)-3-nitropyridine
3-(Chloromethyl)-6-cyano-2-(difluoromethyl)-4-methylpyridine
4-Cyano-2-(difluoromethyl)-5-nitro-3-(trifluoromethyl)pyridine
4-(Chloromethyl)-5-cyano-2-(difluoromethyl)-3-methylpyridine
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