Chelidonic acid

Mass

MS-KW-0494          
4-oxo-4H-pyran-2,6-dicarboxylic acid
C7H4O6 H2O          (Mass of molecular ion:    184)

   Source Temperature: 190 °C
   Sample Temperature: 210 °C
   Direct, 75 eV

      14.0       1.5
      16.0       1.2
      17.0       1.3
      18.0       6.3
      25.0       1.8
      26.0       5.4
      28.0      25.4
      29.0       2.6
      37.0       2.4
      38.0       3.4
      39.0       4.1
      40.0       1.9
      41.0      13.6
      42.0       8.4
      43.0       1.0
      44.0      56.7
      45.0       6.6
      49.0       1.2
      50.0       2.7
      52.0       1.1
      53.0      15.7
      54.0       1.9
      55.0       1.4
      66.0       2.2
      68.0       2.6
      69.0     100.0
      70.0       8.7
      71.0       8.2
      95.0       4.5
      96.0       3.5
     111.0       1.2
     112.0       4.2
     128.0       4.1
     139.0      13.4
     140.0       9.2
     156.0      28.9
     157.0       2.0
     167.0       2.0
     184.0      32.3
     185.0       2.9

Assign. Shift(ppm) A 8. B 6.964

     Hz     ppm     Int.

   2783.20   6.965   1000