5-Amino-3-(difluoromethyl)pyridine-2-acetic acid
5-Bromo-2-(difluoromethyl)pyridine-3-sulfonyl chloride
4-Bromo-2-(difluoromethyl)pyridine-3-sulfonyl chloride
3-Bromo-2-(difluoromethyl)pyridine-4-sulfonyl chloride
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