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