4,6-dimethoxy-1,3-dihydro-2-benzofuran-1-one(58545-97-4) IR1

Mass

MS-IW-6405          
4,6-dimethoxyphthalide
C10H10O4            (Mass of molecular ion:    194)

   Source Temperature: 150 °C
   Sample Temperature: 120 °C
   Direct, 75 eV

      18.0       1.4
      39.0       1.2
      50.0       2.1
      51.0       2.5
      53.0       1.0
      62.0       2.1
      63.0       4.0
      64.0       1.6
      65.0       1.6
      69.0       3.4
      74.0       1.0
      75.0       1.1
      76.0       1.2
      77.0       5.2
      78.0       1.7
      79.0       1.9
      91.0       1.3
      92.0       2.6
      93.0       1.0
      94.0       1.0
      95.0       1.7
     106.0       2.7
     107.0       7.0
     108.0       1.4
     109.0       2.3
     122.0      10.7
     123.0       1.3
     135.0       3.7
     137.0      19.8
     138.0       2.6
     150.0       1.7
     163.0       1.8
     165.0     100.0
     166.0      10.4
     167.0       1.1
     193.0      12.3
     194.0      87.3
     195.0       9.8
     196.0       1.2