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Abbreviations m7G; m7G
CAS number 20244-86-4 N
PubChem 445404
ChemSpider 393054 YesY
ChEBI CHEBI:20794 YesY
Jmol-3D images Image 1
Molecular formula C11H16N5O5
Molar mass 298.28 g mol−1
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

7-Methylguanosine (m7G) is a modified purine nucleobase. It is a methylated version of guanosine and when found in human urine, it may be a biomarker of some types of cancer. It also plays a role in RNA as blocking group at its 5´-end. [1]


  1. ^ Reynaud, C; Bruno, C; Boullanger, P; Grange, J; Barbesti, S; Niveleau, A (1992). "Monitoring of urinary excretion of modified nucleosides in cancer patients using a set of six monoclonal antibodies". Cancer letters 61 (3): 255–62. doi:10.1016/0304-3835(92)90296-8. PMID 1739950. 

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