Tanshinone I(568-73-0) IR2

Mass

MS-IW-8002          
1,6-dimethylphenanthro(1,2-b)furan-10,11-dione
C18H12O3            (Mass of molecular ion:    276)

   Source Temperature: 170 °C
   Sample Temperature: 180 °C
   Direct, 75 eV

      63.0       1.3
      69.5       1.3
      75.0       1.1
      81.5       2.0
      82.0       3.1
      82.5       4.0
      83.0       1.6
      87.0       1.0
      88.0       1.9
      93.5       1.1
      94.0       1.5
      94.5       4.8
      95.0       3.0
      95.5       1.3
      96.0       2.2
     109.0       1.5
     110.0       1.2
     111.0       1.3
     123.0       1.5
     124.0       5.5
     124.5       1.0
     138.0       6.1
     138.5       1.1
     139.0       3.2
     140.0       1.3
     150.0       1.3
     151.0       1.5
     152.0       1.8
     163.0       2.9
     164.0       1.8
     165.0       4.4
     176.0       6.3
     177.0       3.8
     178.0       1.1
     187.0       2.4
     188.0       2.0
     189.0      12.7
     190.0       5.3
     191.0      20.6
     192.0       8.2
     193.0       1.2
     205.0       2.4
     219.0       3.5
     220.0       3.8
     233.0       1.1
     247.0       8.0
     248.0     100.0
     249.0      19.0
     250.0       2.5
     276.0      50.0
     277.0      10.2
     278.0       2.2