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