2-Bromo-6-(difluoromethyl)-3-methylpyridine-5-sulfonyl chloride
2,6-Diiodopyridine-3-sulfonyl chloride
3-Chloro-5-cyano-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine
2-(Difluoromethyl)-4-methoxy-3-nitropyridine-6-sulfonyl chloride
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