3-Cyano-2-(difluoromethyl)-6-methoxypyridine-5-carboxaldehyde
3-(Bromomethyl)-4-cyano-2-(difluoromethyl)-6-iodopyridine
2-Cyano-6-(difluoromethyl)-4-methoxypyridine-3-carboxaldehyde
6-Cyano-3-(difluoromethyl)-4-methoxypyridine-2-acetic acid
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