1,2,3,6-Tetrahydro-4-methylphthalic anhydride(3425-89-6) IR2

Mass

MS-IW-8132          
4-methyl-4-cyclohexene-1,2-dicarboxylic anhydride
C9H10O3             (Mass of molecular ion:    166)

   Source Temperature: 200 °C
   Sample Temperature: 150 °C
   Reservoir, 75 eV

      27.0       6.2
      28.0       2.0
      38.0       1.7
      39.0      11.8
      40.0       2.2
      41.0       3.8
      45.0       1.9
      46.0       1.7
      50.0       2.6
      51.0       5.8
      52.0       2.5
      53.0       4.9
      54.0       1.1
      62.0       1.1
      63.0       2.4
      65.0       4.6
      66.0       1.9
      67.0       3.0
      68.0       1.6
      77.0      22.3
      78.0       5.0
      79.0      60.1
      80.0       4.6
      91.0      17.5
      92.0       7.0
      93.0     100.0
      94.0      23.3
      95.0       2.9
     110.0       1.3
     111.0       1.0
     120.0       1.3
     121.0       1.2
     123.0       5.4
     137.0       2.0
     138.0      51.4
     139.0       4.9
     166.0       7.6
     167.0       3.1