2-Cyano-4-(difluoromethyl)-6-hydroxypyridine-3-carboxaldehyde
4-Cyano-2-(difluoromethyl)-3-hydroxypyridine-6-methanol
4-Chloro-2-(difluoromethyl)-3-nitropyridine-5-acetic acid
3-Chloro-4-(difluoromethyl)-2-nitropyridine-5-acetic acid
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