3,4-Dichloro-5-(difluoromethyl)pyridine-2-sulfonyl chloride
3,6-Dichloro-4-(difluoromethyl)pyridine-2-sulfonyl chloride
2,5-Dichloro-3-(difluoromethyl)pyridine-4-sulfonyl chloride
2,4-Diamino-3-(difluoromethyl)pyridine-6-carboxylic acid
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