Naphtho[1,2-c:5,6-c']difuran-1,3,6,8-tetrone

Mass

MS-IW-8646          
1,2,5,6-naphthalenetetracarboxylic 1,2:5,6-dianhydride
C14H4O6             (Mass of molecular ion:    268)

   Source Temperature: 200 °C
   Sample Temperature: 240 °C
   Direct, 75 eV

      17.0       2.5
      18.0      13.5
      28.0      10.7
      44.0       3.3
      49.0       1.3
      50.0       1.1
      55.0       1.0
      61.0      10.0
      61.5       6.2
      62.0      32.3
      62.5       3.5
      70.0       1.2
      73.0       1.4
      74.0      23.2
      75.0       1.8
      76.0      15.5
      76.5       2.0
      77.0       1.4
      84.0       1.1
      85.0       2.2
      86.0       3.7
      90.0       6.2
      97.0       1.2
      98.0      13.4
      99.0       1.3
     112.0       1.9
     121.0       1.9
     122.0       8.3
     123.0       4.6
     124.0      30.9
     125.0       3.6
     152.0      43.5
     153.0       5.4
     168.0       1.6
     196.0      35.7
     197.0       4.8
     224.0     100.0
     225.0      14.2
     226.0       1.8
     240.0       1.1
     268.0      67.6
     269.0      10.4
     270.0       1.5