Mass

MS-NW-9902          
dimethyl ethylidenemalonate
C7H10O4             (Mass of molecular ion:    158)

   Source Temperature: 260 °C
   Sample Temperature: 160 °C
   Reservoir, 75 eV

      15.0      11.6
      27.0       4.1
      28.0       2.6
      29.0       9.3
      31.0       1.0
      37.0       1.1
      38.0       2.9
      39.0      13.1
      40.0       6.9
      41.0       2.8
      42.0       1.3
      43.0       3.3
      45.0       1.2
      53.0       9.2
      55.0       2.7
      59.0      43.7
      60.0       1.2
      66.0       1.0
      67.0       6.0
      68.0      36.5
      69.0       5.6
      83.0       1.3
      85.0       1.5
      95.0      37.5
      96.0       2.4
      97.0       1.3
      98.0      28.2
      99.0       5.7
     126.0     100.0
     127.0      80.9
     128.0       5.9
     158.0       2.4

Parameter ppm Hz D(A) 7.135 D(B) 1.966 J(A,B) 7.3 D(C) 3.838 D(D) 3.778

     Hz     ppm     Int.

   2151.48   7.172     41
   2144.19   7.147    125
   2136.90   7.123    126
   2129.61   7.099     43
   1151.38   3.838   1000
   1133.45   3.778   1000
    593.44   1.978    503
    586.15   1.954    499