Dimethyl itaconate

Mass

MS-NW-0575          
dimethyl methylenesuccinate
C7H10O4             (Mass of molecular ion:    158)

   Source Temperature: 280 °C
   Sample Temperature: 170 °C
   Reservoir, 75 eV

      14.0       1.0
      15.0      61.1
      18.0       2.2
      26.0       1.5
      27.0       7.3
      28.0       3.3
      29.0      13.7
      30.0       1.1
      31.0       3.0
      37.0       1.8
      38.0       5.2
      39.0      32.9
      40.0      23.4
      41.0      28.7
      42.0       3.1
      43.0       3.5
      44.0       1.1
      45.0       7.7
      53.0       4.6
      54.0       4.1
      55.0      24.2
      56.0       2.0
      57.0       1.1
      59.0     100.0
      60.0       2.4
      67.0       9.9
      68.0      17.8
      69.0      38.5
      70.0       2.1
      71.0      17.1
      72.0       2.4
      74.0       1.0
      81.0       1.3
      82.0       4.4
      83.0       9.2
      84.0       1.0
      85.0       1.7
      87.0       1.2
      95.0       3.4
      98.0       6.8
      99.0      45.8
     100.0       3.1
     113.0      18.3
     114.0       1.4
     115.0       1.4
     126.0      44.2
     127.0      63.5
     128.0       5.2
     130.0       7.7
     143.0       5.1
     158.0       5.5

Assign. Shift(ppm) A 6.34 B 5.73 C 3.773 D 3.702 E 3.349

     Hz     ppm     Int.

    567.75   6.340    136
    567.25   6.334    142
    566.81   6.329    143
    514.31   5.743     58
    513.25   5.731    129
    512.19   5.719    130
    337.94   3.774   1000
    331.63   3.703    820
    300.38   3.354    253
    299.56   3.345    264