Acetylacrylic acid methyl ester(4188-88-9) MS

Mass

MS-NW-2273          
methyl 4-oxo-2-pentenoate
C6H8O3              (Mass of molecular ion:    128)

   Source Temperature: 260 °C
   Sample Temperature: 170 °C
   Reservoir, 75 eV

      14.0       2.0
      15.0      23.8
      26.0      10.5
      27.0       3.8
      28.0       1.4
      29.0       4.2
      31.0       1.6
      37.0       1.2
      38.0       1.8
      39.0       6.6
      40.0       1.1
      41.0       6.3
      42.0       6.6
      43.0      71.4
      44.0       1.8
      50.0       1.1
      51.0       1.0
      53.0      11.5
      54.0       8.7
      55.0       4.7
      59.0      23.0
      68.0       1.2
      69.0      14.7
      81.0       3.6
      82.0       5.0
      85.0      18.9
      96.0       1.0
      97.0      32.6
      98.0       2.0
     100.0       2.2
     113.0     100.0
     114.0       5.8
     128.0      16.7
     129.0       1.2