SHEET /m/cytosine · PubChem CID 597 · CAS 71-30-7 · REV 2026.07
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Cytosine from source
C4H5N3O · 111.1 g/mol
4-Amino-2-hydroxypyrimidine · 4-aminopyrimidin-2(1H)-one · Cytosinimine · 2(1H)-Pyrimidinone, 4-amino-
chemical compound
CategoryBody
TypeNucleobase
Chemical familyAmines
LeaderboardsBiggest
Fig. 1 · 2D structure RDKit
C1=C(NC(=O)N=C1)N
Where you'll find it
Not yet mapped to everyday foods or products.
Toxicity & hazards
WarningIrritantH315, H319, H335from source