5,8-dihydro-1H-pteridine-2,4,6,7-tetrone

Mass

MS-IW-6912          
5,8-dihydro-2,4,6,7(1H,3H)-pteridinetetrone
C6H4N4O4            (Mass of molecular ion:    196)

   Source Temperature: 220 °C
   Sample Temperature: 280 °C
   Direct, 75 eV

      26.0       9.7
      27.0      41.8
      28.0     100.0
      29.0      14.8
      30.0       4.0
      31.0       4.0
      32.0       5.2
      38.0       3.8
      39.0      10.1
      40.0       4.3
      41.0      16.4
      42.0      14.8
      43.0      26.5
      44.0      52.3
      45.0       8.4
      50.0       4.6
      51.0       4.3
      52.0       8.3
      53.0      15.6
      54.0      38.4
      55.0      17.3
      56.0       6.1
      57.0      12.5
      67.0       7.2
      68.0       6.2
      69.0      34.7
      70.0      24.4
      71.0       5.5
      77.0       4.3
      78.0       4.1
      80.0       5.4
      81.0       6.7
      82.0       6.0
      83.0       6.1
      84.0       6.7
      85.0       6.6
      93.0       3.8
      94.0       3.5
      95.0       4.3
      96.0       7.7
      97.0      40.3
      98.0       6.1
     104.0       4.0
     105.0       3.7
     110.0       3.8
     111.0       3.9
     124.0       3.6
     125.0      51.8
     126.0       6.7
     128.0       3.6
     133.0       4.1
     153.0       4.2
     167.0      20.3
     168.0      83.0
     169.0       5.4
     180.0       4.9
     195.0      13.3
     196.0      70.4
     197.0       7.3