Diethyl ketomalonate

Mass

MS-NW-8993          
diethyl mesoxalate
C7H10O5             (Mass of molecular ion:    174)

   Source Temperature: 260 °C
   Sample Temperature: 140 °C
   Reservoir, 75 eV

      26.0       1.3
      27.0      14.7
      28.0       7.3
      29.0     100.0
      30.0       4.3
      31.0       9.3
      43.0       3.7
      44.0       1.7
      45.0       9.4
      46.0       1.2
      47.0       1.8
      56.0       1.5
      57.0       2.7
      59.0       1.8
      73.0       3.6
      74.0      15.0
      75.0       1.8
     102.0       5.0

Assign. Shift(ppm) A 4.417 B 1.396

     Hz     ppm     Int.

    406.94   4.544    119
    399.69   4.463    450
    392.56   4.384    493
    385.44   4.304    165
    132.19   1.476    461
    129.75   1.449     24
    125.13   1.398   1000
    122.75   1.371     31
    122.31   1.366     32
    120.94   1.351     34
    120.06   1.341     36
    117.94   1.317    452