4-Methylphthalic anhydride

Mass

MS-IW-4852          
4-methylphthalic anhydride
C9H6O3              (Mass of molecular ion:    162)

   Source Temperature: 220 °C
   Sample Temperature: 150 °C
   Reservoir, 75 eV

      27.0       1.0
      28.0       1.9
      37.0       2.4
      38.0       3.1
      39.0       9.0
      40.0       2.2
      43.0       5.5
      43.5       1.4
      44.0       2.7
      44.5       2.8
      45.0       8.4
      49.0       1.3
      50.0       6.8
      51.0       5.2
      59.0       1.7
      61.0       4.1
      62.0       9.8
      63.0      19.9
      64.0       8.2
      73.0       1.0
      74.0       3.8
      75.0       2.7
      77.0       1.0
      85.0       1.8
      86.0       3.1
      87.0       2.5
      88.0       1.3
      89.0      42.1
      90.0      62.8
      91.0       6.6
     118.0     100.0
     119.0      10.4
     136.0       1.6
     162.0      47.5
     163.0       5.0

Assign. Shift(ppm) A 7.961 B 7.907 C 7.816 D 2.536

     Hz     ppm     Int.

   3186.18   7.973    173
   3178.67   7.954    225
   3161.64   7.912    150
   3160.90   7.910    238
   3160.17   7.908    271
   3159.44   7.906    246
   3158.71   7.904    151
   3128.12   7.828    132
   3127.38   7.826    154
   3126.65   7.824    146
   3126.10   7.823    111
   3120.42   7.808     98
   3119.69   7.807    121
   3118.96   7.805    116
   3118.23   7.803     94
   1013.83   2.537   1000
   1009.98   2.528     43