Ethyl 2-(difluoromethyl)-3-hydroxy-5-methoxypyridine-6-acetate
Methyl 4-(difluoromethyl)-3-hydroxy-2-methoxypyridine-5-acetate
3-(Difluoromethyl)-5-hydroxy-2-nitropyridine-6-methanol
4-(Difluoromethyl)-6-hydroxy-2-nitropyridine-3-sulfonamide
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