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