Mass

MS-NW-7551          
di-tert-butyl acetylenedicarboxylate
C12H18O4            (Mass of molecular ion:    226)

   Source Temperature: 260 °C
   Sample Temperature: 170 °C
   Reservoir, 75 eV

      15.0       1.4
      26.0       2.0
      27.0       4.0
      28.0       2.7
      29.0      10.4
      39.0       7.8
      40.0       1.7
      41.0      26.4
      42.0       1.3
      43.0       7.3
      44.0       8.6
      52.0       1.0
      53.0      11.5
      55.0       3.4
      56.0      17.0
      57.0     100.0
      58.0       4.5
      59.0      14.6
      80.0       2.4
      81.0       1.4
      97.0       3.4
     111.0       1.0
     125.0       1.6
     153.0       2.8
     155.0       1.5

Parameter ppm Hz D(A) 1.507

     Hz     ppm     Int.

    452.10   1.507   1000