2-Cyano-4,6-dibromo-3-(difluoromethyl)pyridine
4-Amino-6-cyano-2-(difluoromethyl)pyridine-3-sulfonamide
5-Chloro-3-cyano-2-(difluoromethyl)-4-iodopyridine
Methyl 2-cyano-5-hydroxy-3-(trifluoromethoxy)pyridine-4-acetate
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