4-Bromo-5-fluoropyridine-2-sulfonyl chloride
5-Hydroxy-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
3-Chloro-4-fluoro-2-nitro-5-(trifluoromethoxy)pyridine
4-Bromo-2-methoxypyridine-5-acetonitrile
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