4-(Difluoromethyl)-2,5-dimethoxypyridine-3-sulfonyl chloride
6-(Difluoromethyl)-2,3-dimethoxypyridine-5-sulfonyl chloride
4-Amino-3-bromo-2-chloro-5-(difluoromethyl)pyridine
3-Amino-5-bromo-2-chloro-4-(difluoromethyl)pyridine
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