5-Chloro-2,3-diamino-4-(difluoromethyl)pyridine
5-Chloro-2,3-dibromo-6-(difluoromethyl)pyridine
4-Chloro-2,3-diamino-5-(difluoromethyl)pyridine
4-Chloro-3,5-diamino-2-(difluoromethyl)pyridine
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