Names | |
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Preferred IUPAC name
6-Amino-1,9-dihydro-2H-purin-2-one | |
Other names
2-Hydroxyadenine
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.020.144 |
EC Number |
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PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
C5H5N5O | |
Molar mass | 151.1261 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Isoguanine or 2-hydroxyadenine is a purine base that is an isomer of guanine. It is a product of oxidative damage to DNA and has been shown to cause mutation.[1] It is also used in combination with isocytosine in studies of unnatural nucleic acid analogues of the normal base pairs in DNA.[2][3]
It is used as a nucleobase of hachimoji nucleic acids.[4] In hachimoji DNA, it pairs with 1-methylcytosine, while in hachimoji RNA, it pairs with isocytosine.