Pyrimidone

4-Pyrimidone
IUPAC name Pyrimidone
Other names Hydroxypyrimidine; Pyrimidinone
Identifiers
CAS number	51953-17-4
PubChem	20695
Jmol-3D images	Image 1
SMILES O=C1NC=NC=C1
Properties
Molecular formula	C4H4N2O
Molar mass	96.09 g mol−1
Appearance	White to light yellow powder
Melting point	163-168 °C
Hazards
Main hazards	Respiratory system, eye, skin irritation
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

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.

Derivatives

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

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

• 

  Cytosine

• 

  Metharbital

See also

• Pyrimidine