Methanesulfonic anhydride (7143-01-3) MS
Product NameMethanesulfonic anhydride
CAS7143-01-3
Molecular FormulaC2H6O5S2
Molecular Weight174.19
InChIInChI=1S/C2H6O5S2/c1-8(3,4)7-9(2,5)6/h1-2H3
InChIKey IZDROVVXIHRYMH-UHFFFAOYSA-N
SmilesO(S(=O)(=O)C)S(=O)(=O)C
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MassMS-NW-7879 methanesulfonic anhydride C2H6O5S2 (Mass of molecular ion: 174)
Source Temperature: 120 °C Sample Temperature: 160 °C Direct, 75 eV
15.0 29.7 28.0 1.3 29.0 1.9 31.0 2.9 45.0 1.1 48.0 3.1 63.0 1.4 64.0 1.7 65.0 2.8 78.0 1.8 79.0 100.0 80.0 5.4 81.0 6.8 96.0 5.8 174.0 3.0
parameter in CDCl3
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1H NMR 300 MHz C2 H6 O5 S2 0.125 g : 0.5 ml CDCl3 methanesulfonic anhydride 
Parameter ppm Hz
D(A) 3.439
Hz ppm Int.1031.70 3.439 1000
in CDCl3
KBr disc
liquid film
nujol mull
