2H-1-Benzopyran-2-one, 3-acetyl-4-hydroxy-7-methoxy-

Mass

MS2003-01494WA      
3-acetyl-4-hydroxy-7-methoxycoumarin
C12H10O5            (Mass of molecular ion:    234)

   Source Temperature: 250 °C
   Sample Temperature:  40 °C
   Direct, 70 eV

      15.0       2.6
      18.0       1.7
      27.0       1.0
      28.0       1.9
      38.0       1.6
      39.0       3.4
      41.0       1.0
      43.0      23.8
      50.0       2.8
      51.0       6.9
      52.0       2.0
      53.0       4.0
      55.0       1.7
      62.0       2.7
      63.0       7.8
      64.0       4.6
      65.0       3.9
      66.0       1.9
      67.0       1.4
      69.0       6.5
      74.0       1.5
      75.0       2.1
      76.0       2.2
      77.0       4.5
      78.0       1.0
      79.0       7.5
      80.0       1.9
      91.0       1.7
      92.0       6.9
      93.0       1.8
      94.0       1.7
      95.0       5.2
     103.0       3.3
     106.0       1.5
     107.0       9.1
     108.0       5.9
     119.0       1.8
     120.0       2.0
     121.0       1.1
     122.0      12.3
     123.0       1.6
     134.0       1.1
     135.0       4.8
     137.0       1.3
     149.0       1.5
     150.0      40.6
     151.0      67.6
     152.0       5.9
     163.0       1.1
     164.0       5.0
     191.0       3.7
     192.0      19.3
     193.0       2.2
     206.0       1.5
     219.0      86.9
     220.0      10.4
     221.0       1.4
     234.0     100.0
     235.0      13.0
     236.0       1.8