269190
Methanesulfonic anhydride
97%
Synonym(s):
Mesyl anhydride, Mesylic anhydride, Methanesulfonyl anhydride, Methylsulfonyl methanesulfonate
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About This Item
Linear Formula:
(CH3SO2)2O
CAS Number:
Molecular Weight:
174.20
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
230-442-1
Beilstein/REAXYS Number:
972316
MDL number:
Assay:
97%
Form:
solid
vapor density
3.3 (vs air)
Quality Segment
assay
97%
form
solid
bp
125 °C/4 mmHg (lit.)
mp
64-67 °C (lit.)
functional group
sulfonic acid
SMILES string
CS(=O)(=O)OS(C)(=O)=O
InChI
1S/C2H6O5S2/c1-8(3,4)7-9(2,5)6/h1-2H3
InChI key
IZDROVVXIHRYMH-UHFFFAOYSA-N
General description
Methanesulfonic anhydride is an organic compound that is commonly used as a reagent for the preparation of methyl sulfonates (mesylates). It is also used in the synthesis of methanesulfonamides using various amine precursors. Additionally, the mixture of methanesulfonic anhydride and dimethyl sulfoxide can be used as an oxidizing agent for the oxidation of primary and secondary alcohols to aldehydes and ketones.
Application
Methanesulfonic anhydride can be used as an amine base to synthesize glycosyl mesylates in situ from the corresponding free hemiacetals under mild conditions.
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signalword
Danger
hcodes
Hazard Classifications
Skin Corr. 1A
supp_hazards
Storage Class
8A - Combustible corrosive hazardous materials
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
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