Methyl 4-bromo-5-cyano-3-(difluoromethyl)pyridine-2-carboxylate
5-Iodo-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride
5-Bromo-2-chloromethyl-4-methylpyridine
2-Amino-4-(difluoromethyl)-5-nitropyridine-3-sulfonyl chloride
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