Cytosine (also called 4-Amino-2-hydroxypyrimidine, Cytosinimine) has the formula C4H5N3O and a molar mass of 111.10 g/mol. The model above is PubChem's computed 3D conformer: drag to rotate, scroll to zoom, and use the measurement tools to read bond lengths and angles.
Explore in 3D Space-filling model PubChem
| IUPAC name | 6-amino-1H-pyrimidin-2-one |
|---|---|
| SMILES | C1=C(NC(=O)N=C1)N |
| PubChem CID | 597 |
| Other names | 4-Amino-2-hydroxypyrimidine, Cytosinimine, 6-amino-1H-pyrimidin-2-one, 4-amino-3h-pyrimidin-2-one, 6-amino-1,2-dihydropyrimidin-2-one |
Atoms use the standard CPK colors: carbon gray, hydrogen white, oxygen red, nitrogen blue, sulfur yellow. Switch to Spacefill to see the molecule's overall shape and size, or Stick for a clear view of the bonds. Click two atoms in distance mode to measure a bond length in ångströms.
3D coordinates are PubChem's computed conformer, one low-energy shape of the molecule. Flexible molecules can take many other shapes.