ISOBERGAPTEN(482-48-4) IR2

Mass

MS-IW-7258          
5-methoxyfuro(2,3-H)chromen-2-one
C12H8O4             (Mass of molecular ion:    216)

   Source Temperature: 150 °C
   Sample Temperature: 140 °C
   Direct, 75 eV

      18.0       4.0
      50.0       1.3
      51.0       3.5
      62.0       1.2
      63.0       2.5
      74.0       1.4
      75.0       1.4
      79.0       1.3
      89.0       4.6
     108.0       4.2
     117.0       1.3
     131.0       1.0
     145.0       9.4
     146.0       1.3
     159.0       1.0
     173.0      29.6
     174.0       3.8
     187.0       1.9
     188.0      20.4
     189.0       2.5
     201.0      17.3
     202.0       2.0
     216.0     100.0
     217.0      13.2
     218.0       1.6