Tanshinone IIA(568-72-9) IR2

Mass

MS-IW-8006          
1,6,6-trimethyl-6,7,8,9-tetrahydrophenanthro(1,2-b)furan-10,11-dione
C19H18O3            (Mass of molecular ion:    294)

   Source Temperature: 160 °C
   Sample Temperature: 150 °C
   Direct, 75 eV

      39.0       1.1
      41.0       1.1
      43.0       2.0
      51.0       1.4
      63.0       1.7
      75.0       1.2
      76.0       3.6
      77.0       1.5
      82.0       1.8
      82.5       1.8
      83.0       1.3
      88.0       1.7
      89.0       4.2
      94.5       1.4
      95.0       1.1
     101.0       1.0
     109.0       1.0
     111.0       1.1
     111.5       1.1
     115.0       3.2
     117.0       1.0
     118.0       1.9
     124.0       1.1
     126.0       1.4
     127.0       1.8
     128.0       2.5
     130.5       2.0
     139.0       2.3
     141.0       2.3
     151.0       2.2
     152.0       5.6
     153.0       2.6
     155.0       1.2
     163.0       1.7
     164.0       1.6
     165.0      12.2
     166.0       4.9
     167.0       2.0
     169.0       1.3
     176.0       2.4
     177.0       2.6
     178.0       9.3
     179.0       7.7
     180.0       3.8
     181.0       1.7
     189.0       3.8
     190.0       3.1
     191.0       2.4
     192.0       1.1
     193.0       2.5
     194.0       1.5
     195.0       2.8
     205.0       3.6
     206.0       1.2
     207.0       1.9
     208.0       2.2
     209.0       1.7
     218.0       1.0
     219.0       1.6
     221.0       2.3
     222.0       5.9
     223.0       4.7
     225.0       1.1
     233.0      17.3
     234.0       4.2
     235.0       5.4
     236.0       5.9
     237.0       2.5
     249.0       8.0
     250.0       2.2
     251.0      40.7
     252.0       9.4
     253.0       1.8
     261.0      77.6
     262.0      15.9
     263.0       2.9
     264.0       3.2
     265.0       5.6
     266.0       2.8
     276.0       1.1
     277.0       9.2
     278.0       3.2
     279.0      50.4
     280.0      10.3
     281.0       1.7
     292.0       6.5
     293.0       2.6
     294.0     100.0
     295.0      21.4
     296.0       3.6