5-Cyano-2-(difluoromethyl)-4-iodopyridine-3-sulfonamide
4-(Chloromethyl)-5-cyano-3-(difluoromethyl)-2-methoxypyridine
5-(Chloromethyl)-3-cyano-4-(difluoromethyl)-2-methoxypyridine
3-Cyano-5-(difluoromethyl)-4-hydroxypyridine-2-carboxaldehyde
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