Isocytosine

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Isocytosine
IUPAC name 2-Amino-3H-pyrimidin-4-one
Other names 2-Aminouracil
Identifiers
CAS number [108-53-2]
PubChem 66950
SMILES C1=CN=C(NC1=O)N
Properties
Molecular formula C4H5N3O
Molar mass 111.102
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Isocytosine or 2-aminouracil is a pyrimidine base that is an isomer of cytosine. It is used in combination with isoguanine in studies of unnatural nucleic acid analogues of the normal base pairs in DNA.