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