5-Cyano-2,4-dibromo-3-(difluoromethyl)pyridine
3-(Difluoromethyl)-2-nitro-6-(trifluoromethyl)pyridine
2-(Chloromethyl)-5-(difluoromethyl)-4-nitropyridine
6-Cyano-2,3-dibromo-5-(difluoromethyl)pyridine
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