Methyl 2-chloro-3-cyano-5-(difluoromethyl)pyridine-6-carboxylate
5-(Difluoromethyl)-4-nitro-3-(trifluoromethyl)pyridine-2-sulfonyl chloride
6-Nitro-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
6-Fluoro-2-iodo-3-(methylthio)pyridine
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