Description:4-Hydroxypyridine, with the CAS number 626-64-2, is an organic compound characterized by a pyridine ring substituted with a hydroxyl group at the fourth position. This compound appears as a white to light yellow crystalline solid and is soluble in water, alcohols, and other polar solvents due to the presence of the hydroxyl group, which can engage in hydrogen bonding. It has a molecular formula of C5H5NO and a molecular weight of approximately 97.10 g/mol. 4-Hydroxypyridine exhibits basic properties typical of pyridine derivatives, allowing it to act as a weak base. It is often used as a building block in organic synthesis and can serve as a ligand in coordination chemistry. Additionally, it has applications in pharmaceuticals and agrochemicals, where it may function as an intermediate in the synthesis of various biologically active compounds. Its reactivity can be influenced by the presence of the hydroxyl group, making it a versatile compound in chemical reactions.
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