Diethyl 2-bromo-2-methylmalonate

Mass

MS2014-05109CW      
diethyl 2-bromo-2-methylmalonate
C8H13BrO4           (Mass of molecular ion:    252)

   Source Temperature: 240 °C
   Sample Temperature:  20 °C
   Direct, 70 eV

      15.0       1.7
      16.0       1.3
      17.0      15.4
      18.0       2.0
      26.0       4.8
      27.0      29.3
      28.0      18.1
      29.0      61.0
      30.0       1.7
      31.0       2.3
      32.0       4.5
      41.0       2.4
      42.0       1.1
      43.0      24.9
      44.0       4.2
      45.0       6.6
      52.0       1.1
      53.0       2.3
      54.0       3.4
      55.0      10.9
      56.0       7.2
      57.0       4.4
      71.0       1.2
      72.0       8.2
      73.0      22.4
      74.0       9.0
      75.0       1.1
      80.0       2.1
      81.0       1.1
      82.0       3.0
      83.0      17.2
      84.0       1.7
      85.0       1.1
      99.0       8.4
     100.0       9.1
     101.0       8.0
     102.0       8.0
     105.0       1.6
     106.0       6.2
     107.0       5.5
     108.0       6.5
     109.0       4.3
     110.0       1.2
     123.0       9.1
     125.0       8.8
     126.0       1.3
     127.0       6.1
     128.0       6.8
     129.0      15.8
     130.0       1.2
     133.0       4.5
     134.0      30.3
     135.0       9.3
     136.0      30.1
     137.0       5.2
     146.0       1.2
     147.0       3.0
     151.0      15.7
     152.0     100.0
     153.0      19.0
     154.0      98.2
     155.0       3.5
     174.0       1.5
     179.0      15.0
     180.0      58.3
     181.0      18.1
     182.0      56.7
     183.0       3.6
     207.0      12.6
     208.0       1.2
     209.0      12.2
     210.0       1.1

Assign. Shift(ppm) A 4.281 B 2.079 C 1.303

     Hz     ppm     Int.

    394.56   4.406    137
    387.31   4.325    443
    380.19   4.246    464
    376.63   4.206     23
    373.19   4.167    161
    186.25   2.080    945
    123.69   1.382    491
    116.63   1.303   1000
    109.50   1.223    442