5,11-Dihydro[1]benzopyrano[4,3-c][1]benzopyran-5,11-dione

Mass

MS-IW-1227          
chromeno(4,3-c)chromene-5,11-dione
C16H8O4             (Mass of molecular ion:    264)

   Source Temperature: 130 °C
   Sample Temperature: 120 °C
   Direct, 75 eV

      63.0       2.7
      75.0       1.4
      76.0       4.2
      81.5       1.7
      82.0       1.8
      96.0       2.0
     104.0       2.3
     118.0       1.1
     126.0       1.7
     132.0       2.3
     150.0       1.4
     151.0       3.3
     152.0       6.1
     163.0       5.5
     164.0       1.8
     180.0       1.6
     208.0       7.5
     209.0       1.1
     236.0      30.3
     237.0       5.1
     264.0     100.0
     265.0      17.9
     266.0       2.3