Croconic acid(488-86-8) ¹H NMR

Mass

MS-IW-9099          
4,5-dihydroxy-4-cyclopentene-1,2,3-trione
C5H2O5              (Mass of molecular ion:    142)

   Source Temperature: 180 °C
   Sample Temperature: 190 °C
   Direct, 75 eV

      12.0       3.4
      13.0       1.2
      17.0       3.8
      18.0      16.8
      24.0       3.5
      28.0      98.7
      29.0      52.7
      30.0       1.4
      36.0       1.3
      40.0      21.0
      41.0       9.4
      42.0       2.2
      43.0       1.4
      44.0      10.0
      52.0       3.3
      56.0       4.6
      58.0     100.0
      59.0       2.4
      68.0      26.6
      69.0       4.7
      86.0      43.5
      87.0       1.6
     114.0      38.2
     115.0       2.2
     142.0      50.3
     143.0       3.4