5-(Difluoromethyl)-3-hydroxy-4-methylpyridine-2-carboxylic acid
2-(Difluoromethyl)-3-hydroxy-5-methyl-6-nitropyridine
Ethyl 2-(difluoromethyl)-6-hydroxy-3-methylpyridine-4-carboxylate
Ethyl 3-(difluoromethyl)-4-hydroxy-5-nitropyridine-2-carboxylate
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