2-(Chloromethyl)-5-cyano-3-hydroxy-6-(trifluoromethoxy)pyridine
3-Bromo-2-chloro-5-cyano-4-(difluoromethyl)pyridine
6-Bromo-2-nitro-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Bromo-3-chloromethyl-4-nitropyridine
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