Itaconic acid monomethyl ester

Mass

MS-NW-1425          
4-methyl hydrogen methylenesuccinate
C6H8O4              (Mass of molecular ion:    144)

   Source Temperature: 260 °C
   Sample Temperature: 180 °C
   Reservoir, 75 eV

      14.0       2.5
      15.0      68.5
      16.0       1.0
      18.0       3.3
      26.0       3.6
      27.0       9.2
      28.0      10.0
      29.0      28.4
      30.0       2.0
      31.0      17.6
      32.0       5.2
      33.0       1.9
      34.0       1.0
      37.0       6.3
      38.0      13.4
      39.0      88.5
      40.0      51.2
      41.0      59.6
      42.0       8.8
      43.0       9.3
      44.0       3.6
      45.0      27.5
      53.0       3.4
      54.0       3.6
      55.0      19.0
      56.0       5.7
      57.0      25.7
      58.0       8.4
      59.0     100.0
      60.0       3.1
      61.0       1.0
      66.0       1.1
      67.0       8.1
      68.0      94.4
      69.0      47.0
      70.0       3.7
      71.0       2.7
      72.0       6.3
      73.0       1.5
      74.0       1.3
      82.0       3.2
      83.0       1.6
      84.0       6.1
      85.0      78.3
      86.0       4.4
      98.0       1.7
      99.0      11.4
     100.0      11.1
     101.0       1.1
     112.0      16.8
     113.0      60.5
     114.0       3.8
     126.0       7.8
     127.0       2.2
     144.0       9.5

Assign. Shift(ppm) A 10.53 B 6.474 C 5.844 D 3.713 E 3.356 J(B,C)=0.9HZ J(C,E)=-1.0HZ

     Hz     ppm     Int.

    943.31  10.533     45
    580.38   6.481    122
    579.44   6.470    132
    525.06   5.863     40
    523.94   5.851    114
    523.00   5.840    117
    521.88   5.828     48
    332.56   3.714   1000
    301.00   3.361    202
    300.13   3.352    215