2,3-Dimethylmaleic anhydride(766-39-2) MS
Product Name2,3-Dimethylmaleic anhydride
CAS766-39-2
Molecular FormulaC6H6O3
Molecular Weight126.11
InChIInChI=1S/C6H6O3/c1-3-4(2)6(8)9-5(3)7/h1-2H3
InChIKey MFGALGYVFGDXIX-UHFFFAOYSA-N
SmilesO1C(=O)C(C)=C(C)C1=O
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MassMS2006-03265WA 2,3-dimethylmaleic anhydride C6H6O3 (Mass of molecular ion: 126)
Source Temperature: 250 °C Sample Temperature: 250 °C Reservoir, 70 eV
26.0 6.1 27.0 18.0 28.0 5.6 29.0 1.5 37.0 4.4 38.0 5.7 39.0 66.4 40.0 2.5 43.0 1.1 44.0 1.7 45.0 1.7 49.0 4.5 50.0 18.8 51.0 19.0 52.0 11.1 53.0 36.0 54.0 100.0 55.0 4.4 66.0 1.3 67.0 3.8 82.0 81.9 83.0 4.5 126.0 27.2 127.0 1.9
400 MHz in CDCl3
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1H NMR 399.65 MHz C6 H6 O3 0.038 g : 0.5 ml CDCl3 2,3-dimethylmaleic anhydride 
Assign. Shift(ppm)
A 2.085
Hz ppm Int.833.25 2.085 1000
in CDCl3
KBr disk
Nujol
