Mass

MS-IW-3193          
7-acetoxy-3-methoxy-2-(p-methoxyphenyl)-4H-chromen-4-one
C19H16O6            (Mass of molecular ion:    340)

   Source Temperature: 170 °C
   Sample Temperature: 190 °C
   Direct, 75 eV

      15.0       2.8
      28.0       1.8
      39.0       1.6
      41.0       1.0
      42.0       3.3
      43.0      22.0
      50.0       1.9
      51.0       2.4
      53.0       1.4
      62.0       1.8
      63.0      10.2
      64.0       4.2
      65.0       3.0
      69.0       2.0
      74.0       1.0
      75.0       2.5
      76.0       5.4
      77.0      12.3
      78.0       1.5
      79.0       1.6
      88.0       1.3
      89.0       2.5
      91.0       1.6
      92.0       9.3
      93.0       1.1
     104.0       1.4
     107.0       6.2
     108.0       3.0
     117.0       2.2
     119.0      12.0
     120.0       2.2
     121.0       3.1
     127.0       1.5
     128.0       1.6
     132.0      11.0
     133.0       2.9
     134.0       1.5
     135.0      28.2
     136.0       3.8
     137.0       8.1
     139.0       2.8
     140.0       1.1
     141.0       1.2
     147.0       1.4
     149.0       1.2
     152.0       1.0
     155.0       1.4
     159.0       1.7
     161.0       3.0
     162.0       3.3
     168.0       1.5
     169.0       1.0
     171.0       1.9
     183.0       1.0
     184.0       1.6
     190.0       1.4
     197.0       1.7
     198.0       1.3
     199.0       1.2
     211.0       2.9
     212.0       6.1
     213.0       1.5
     224.0       3.5
     225.0       3.4
     226.0       2.5
     227.0       3.8
     237.0       5.6
     238.0       1.9
     239.0       1.7
     240.0       2.9
     241.0       1.5
     249.0       1.3
     251.0       1.1
     252.0       2.3
     253.0       4.0
     254.0       6.8
     255.0      35.7
     256.0       6.0
     265.0       3.7
     266.0       1.8
     267.0      18.6
     268.0      14.4
     269.0      20.7
     270.0       4.0
     279.0      11.9
     280.0      17.1
     281.0       7.7
     282.0       2.2
     283.0      14.5
     284.0       3.2
     297.0     100.0
     298.0      33.7
     299.0       5.4
     309.0       2.3
     310.0       2.0
     311.0       1.2
     321.0       5.8
     322.0       1.5
     325.0       1.8
     339.0      70.5
     340.0      87.9
     341.0      17.6
     342.0       2.6