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