2,3-二甲基马来酸酐

Mass

MS2006-03265WA      
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

Assign. Shift(ppm) A 2.085

     Hz     ppm     Int.

    833.25   2.085   1000