3-Bromo-2-(difluoromethyl)-4-hydroxypyridine-6-carboxylic acid
4-Bromo-6-(difluoromethyl)-3-hydroxypyridine-2-acetonitrile
4-Bromo-2-(difluoromethyl)-3-hydroxypyridine-6-acetonitrile
5-Bromo-2-(difluoromethyl)-3-hydroxypyridine-4-acetonitrile
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