DEHYDROACETIC ACID

Mass

MS-NW-4803          
3-acetyl-6-methyl-2H-pyran-2,4(3H)-dione
C8H8O4              (Mass of molecular ion:    168)

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

      15.0       7.1
      26.0       1.6
      27.0       4.5
      28.0       3.9
      29.0       2.8
      37.0       1.6
      38.0       2.5
      39.0       6.7
      40.0       1.5
      41.0       2.6
      42.0       4.5
      43.0     100.0
      44.0       2.6
      50.0       1.1
      51.0       1.4
      53.0       3.7
      54.0       1.4
      55.0       5.6
      66.0       1.2
      67.0       2.8
      69.0      17.5
      70.0       1.5
      84.0      10.3
      85.0      48.9
      86.0       2.1
      97.0       1.8
      98.0      12.2
     111.0       9.6
     125.0      19.8
     126.0       2.9
     140.0       3.6
     153.0      41.1
     154.0       3.2
     168.0      59.4
     169.0       5.6

Assign. Shift(ppm) A 16.69 B 5.950 C 2.666 D 2.284 J(B,D)=-0.8HZ

     Hz     ppm     Int.

   1494.86  16.692    303
    533.35   5.956    162
    532.58   5.947    166
    238.87   2.668   1000
    235.90   2.634     33
    205.01   2.290    615
    204.24   2.281    594