3-(Difluoromethyl)-2-hydroxy-5-methoxypyridine-6-sulfonyl chloride
3-(Chloromethyl)-6-(difluoromethyl)-4-hydroxy-2-iodopyridine
4-(Difluoromethyl)-6-hydroxy-3-methoxy-2-nitropyridine
3-(Difluoromethyl)-5-hydroxy-2-methyl-4-nitropyridine
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