Methyl methanesulfonate
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| Names | |
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| Preferred IUPAC name
Methyl methanesulfonate | |
Other names
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| Identifiers | |
3D model (JSmol)
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| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.000.568 |
| EC Number |
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| KEGG | |
| MeSH | D008741 |
PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
| CH3SO2OCH3 | |
| Molar mass | 110.13 g·mol−1 |
| Density | 1.3 g/mL at 25 °C |
| Boiling point | 202 to 203 °C (396 to 397 °F; 475 to 476 K) |
| Related compounds | |
Related compounds
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Methyl methanesulfonate (MMS), also known as methyl mesylate, is an alkylating agent and a carcinogen. It is also a suspected reproductive toxicant, and may also be a skin/sense organ toxicant.[1] It is used in cancer treatment.[2] Its chemical formula is CH3−SO2−O−CH3.
Chemical reactions with DNA
[edit]MMS methylates DNA predominantly on N7-deoxyguanosine and N3-deoxyadenosine, and to a much lesser extent also methylates at other oxygen and nitrogen atoms in DNA bases, and also methylates one of the non-carbon bound oxygen atoms of the phosphodiester linkage. Originally, this action was believed to directly cause double-stranded DNA breaks, because homologous recombination-deficient cells are particularly vulnerable to the effects of MMS.[3] However, it is now believed that MMS stalls replication forks, and cells that are homologous recombination-deficient have difficulty repairing the damaged replication forks.[3]
See also
[edit]- Dimethyl sulfite, a chemical with the same molecular formula but different arrangement
References
[edit]- ^ Scorecard Pollution Information Site: Methyl Methanesulfonate Scorecard.org Accessed 14 Feb 08
- ^ Medical.Webends.com: Methyl Methanesulfonate Archived 2008-02-15 at the Wayback Machine Medical.webends.com Accessed 14 Feb 08
- ^ a b Lundin C, North M, Erixon K, Walters K, Jenssen D, Goldman AS, Helleday T (2005). "Methyl methanesulfonate (MMS) produces heat-labile DNA damage but no detectable in vivo DNA double-strand breaks". Nucleic Acids Research. 33 (12): 3799–3811. doi:10.1093/nar/gki681. PMC 1174933. PMID 16009812.