3,4-二甲氧基-3-环丁烯-1,2-二酮

Mass

MS-IW-9146          
3,4-dimethoxy-3-cyclobutene-1,2-dione
C6H6O4              (Mass of molecular ion:    142)

   Source Temperature: 220 °C
   Sample Temperature: 150 °C
   Reservoir, 75 eV

      12.0       1.2
      14.0       4.3
      15.0     100.0
      16.0       1.5
      18.0       1.2
      26.0       2.4
      27.0       9.0
      28.0      32.1
      29.0       9.0
      30.0       1.9
      31.0       1.5
      40.0       8.1
      41.0       2.4
      42.0       1.4
      43.0      67.8
      44.0       3.0
      45.0       1.6
      52.0       1.6
      53.0       1.4
      56.0       9.6
      68.0      11.4
      69.0       1.6
      83.0       3.2
      86.0      57.5
      87.0       2.8
      99.0      14.8
     114.0      31.5
     115.0       1.9
     142.0      77.7
     143.0       5.7

Parameter ppm Hz D(A) 4.290

     Hz     ppm     Int.

   1287.00   4.290   1000