5,7-Dihydroxy-4-methylcoumarin

Mass

MS-IW-2245          
5,7-dihydroxy-4-methylcoumarin
C10H8O4             (Mass of molecular ion:    192)

   Source Temperature: 180 °C
   Sample Temperature: 160 °C
   Direct, 75 eV

      18.0       2.8
      27.0       2.5
      28.0       1.2
      29.0       1.5
      38.0       1.8
      39.0       6.6
      40.0       1.1
      41.0       2.2
      42.0       1.3
      43.0       2.7
      45.0       1.1
      50.0       3.0
      51.0       5.4
      52.0       3.3
      53.0       5.8
      54.0       1.8
      55.0       3.9
      59.0       1.7
      62.0       1.8
      63.0       3.6
      64.0       1.3
      65.0       4.7
      66.0       3.0
      67.0       4.9
      68.0       1.1
      69.0      16.8
      73.0       1.1
      74.0       1.2
      75.0       1.1
      77.0       7.7
      78.0       2.1
      79.0       6.9
      80.0       2.6
      81.0       1.0
      81.5       1.3
      82.0       5.8
      89.0       1.9
      90.0       1.2
      91.0       1.4
      93.0       2.4
      94.0       1.2
      95.0       4.2
     107.0       5.8
     108.0       2.8
     111.0       1.5
     121.0       8.2
     122.0       1.5
     123.0       1.1
     135.0       7.5
     136.0       4.5
     147.0       3.4
     163.0      37.1
     164.0     100.0
     165.0      10.2
     166.0       1.0
     191.0       1.9
     192.0      96.2
     193.0      11.0
     194.0       1.4
     220.0       1.3