2,3-Butanedione monoxime

Mass

MS-IW-1464          
biacetyl monooxime
C4H7NO2             (Mass of molecular ion:    101)

   Source Temperature: 260 °C
   Sample Temperature: 150 °C
   Reservoir, 75 eV

      14.0       2.4
      15.0      11.3
      18.0       1.3
      26.0       1.8
      27.0       2.9
      28.0       5.0
      29.0       1.3
      30.0       1.2
      31.0       3.6
      38.0       1.9
      39.0       3.4
      40.0       8.7
      41.0      15.0
      42.0      25.0
      43.0     100.0
      44.0       5.0
      45.0       1.4
      55.0       1.0
      58.0      10.3
      60.0       1.6
      84.0       1.3
      86.0       1.2
     101.0      31.4
     102.0       3.0

Assign. Shift(ppm) A 9.23 to 9.14 B 2.402 C 2.002

     Hz     ppm     Int.

    821.75   9.176     66
    215.19   2.403   1000
    212.06   2.368     26
    182.56   2.039     38
    179.38   2.003    993
    176.38   1.970     22
    176.06   1.966     23