2-Chloro-5-cyano-3-(difluoromethyl)pyridine-4-sulfonamide
2-Amino-6-(bromomethyl)-3-(difluoromethyl)pyridine-5-acetonitrile
3-Amino-2-chloro-4-(trifluoromethoxy)pyridine-5-carboxamide
3-(Difluoromethyl)-5-fluoro-4-iodopyridine-2-sulfonyl chloride
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