2-甲酸吡嗪

Mass

MS-NW-7161          
2-pyrazinecarboxylic acid
C5H4N2O2            (Mass of molecular ion:    124)

   Source Temperature: 200 °C
   Sample Temperature: 180 °C
   Reservoir, 75 eV

      14.0       1.3
      16.0       1.0
      17.0       1.1
      18.0       4.2
      24.0       1.1
      25.0       5.2
      26.0      45.7
      27.0       4.7
      28.0      27.5
      29.0       2.1
      37.0       1.3
      38.0       4.8
      39.0       5.7
      39.5       3.6
      40.0       4.2
      41.0       2.4
      42.0       3.9
      44.0      18.4
      45.0      10.7
      50.0       3.7
      51.0      23.0
      52.0      68.5
      53.0      75.6
      54.0       3.7
      69.0       1.4
      70.0      16.6
      76.0       1.0
      77.0       2.5
      78.0       8.7
      79.0      31.4
      80.0     100.0
      81.0       5.4
     106.0      12.1
     107.0       3.9
     119.0       2.3
     124.0      49.3
     125.0       3.5

Assign. Shift(ppm) A 14. B 9.236 C 8.908 D 8.847

     Hz     ppm     Int.

   3691.82   9.238   1000
   3690.54   9.235    922
   3561.47   8.912    833
   3559.12   8.906    917
   3537.54   8.852    659
   3536.26   8.849    708
   3535.19   8.846    639
   3533.69   8.842    498