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