6-(Difluoromethyl)-4-fluoro-2-hydroxypyridine-3-acetonitrile
6-Bromo-4-(bromomethyl)-2-(difluoromethyl)-3-methoxypyridine
2-Cyano-6-(difluoromethyl)-3-iodo-4-methoxypyridine
2-Cyano-6-(difluoromethyl)-5-methoxypyridine-3-acetic acid
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