2,4-Difluoro-5-(difluoromethyl)pyridine-3-sulfonyl chloride
2,3-Difluoro-6-(difluoromethyl)pyridine-5-sulfonyl chloride
2,3-Difluoro-5-(difluoromethyl)pyridine-4-sulfonyl chloride
4-(Difluoromethyl)-2,3-dimethoxypyridine-5-sulfonamide
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