Pyrimidone

Pyrimidone is the name given to either of two heterocyclic compounds with the formula C₄H₄N₂O: 2-pyrimidone

and 4-pyrimidone. The compounds can also be called 2-hydroxypyrimidine or 4-hydroxypyrimidine respectively, based on a substituted pyrimidine, or 1,3-diazine, ring.

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Derivatives Derivatives of pyrimidone are the basis of many other biological molecules, including:

• Nucleobases, such as cytosine
• Barbiturates, such as metharbital

• Antiulcer drugs including temelastine, icotidine, donetidine, and lupitidine.

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