乙酰丁二酸二甲酯

Mass

MS-IW-2184          
dimethyl acetylsuccinate
C8H12O5             (Mass of molecular ion:    188)

   Source Temperature: 220 °C
   Sample Temperature: 160 °C
   Reservoir, 75 eV

      15.0      14.9
      26.0       1.8
      27.0       8.7
      28.0       2.4
      29.0       2.9
      31.0       2.6
      39.0       1.7
      41.0       1.9
      42.0       4.6
      43.0     100.0
      44.0       3.7
      45.0       2.4
      53.0       1.9
      54.0       1.4
      55.0      48.2
      56.0       2.2
      58.0       2.2
      59.0      12.8
      69.0       1.8
      75.0       1.5
      82.0       1.9
      85.0       4.5
      86.0       4.7
      87.0      20.4
      88.0       1.0
      97.0      13.0
      98.0       1.6
      99.0       2.2
     113.0      15.6
     114.0      81.0
     115.0      13.0
     116.0       1.2
     124.0       4.9
     125.0       4.4
     129.0      31.5
     130.0       2.2
     145.0       1.6
     146.0      53.2
     147.0       3.7
     156.0       3.3
     157.0       9.5
     188.0       1.1

Assign. Shift(ppm) A 4.019 B 3.761 C 3.676 D *1 2.957 E *1 2.840 F 2.353 J(A,D)=8.1HZ J(A,E)=6.4HZ J(D,E)=-17.6HZ

     Hz     ppm     Int.

   1613.77   4.038     97
   1607.30   4.022    114
   1605.83   4.019    119
   1599.24   4.002    105
   1503.66   3.763   1000
   1503.05   3.761    949
   1469.60   3.678    978
   1197.27   2.996     78
   1189.21   2.976     73
   1179.69   2.952    145
   1171.63   2.932    145
   1144.41   2.864    144
   1138.06   2.848    144
   1126.95   2.820     78
   1120.48   2.804     81
    940.67   2.354    999