2-Cyano-3,5-dibromo-4-(difluoromethyl)pyridine
2,5-Diamino-3-(difluoromethyl)pyridine-4-carboxaldehyde
5-Cyano-3,4-dibromo-2-(difluoromethyl)pyridine
4,6-Diamino-3-(difluoromethyl)pyridine-2-carboxaldehyde
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