Methanesulfonic anhydride

Methanesulfonic anhydride
IUPAC name methylsulfonyl methanesulfonate
Other names methanesulfonic acid methylsulfonyl ester
Identifiers
CAS number	7143-01-3
PubChem	81560
ChemSpider	73591 Y
Jmol-3D images	Image 1
SMILES O=S(=O)(OS(=O)(=O)C)C
InChI InChI=1S/C2H6O5S2/c1-8(3,4)7-9(2,5)6/h1-2H3 Y Key: IZDROVVXIHRYMH-UHFFFAOYSA-N Y InChI=1/C2H6O5S2/c1-8(3,4)7-9(2,5)6/h1-2H3 Key: IZDROVVXIHRYMH-UHFFFAOYAS
Properties
Molecular formula	C2H6O5S2
Molar mass	174.20 g/mol
Y anhydride (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Methanesulfonic anhydride is an is the acid anhydride of methanesulfonic acid. Like methanesulfonyl chloride, it may be used to generate mesylates (methanesulfonyl esters).