2H-Cyclohepta[b]furan-3-carboxylic acid, 2-oxo-, ethyl ester(22442-46-2) IR1

Mass

MS-IW-7509          
ethyl 2-oxo-2H-cyclohepta(b)furan-3-carboxylate
C12H10O4            (Mass of molecular ion:    218)

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

      17.0       2.7
      18.0      10.3
      26.0       1.5
      27.0       3.9
      28.0       3.6
      29.0       5.4
      39.0       4.5
      43.0       1.0
      44.0       7.3
      45.0       1.2
      50.0       1.4
      51.0       2.9
      62.0       3.2
      63.0       9.0
      64.0       1.1
      75.0       1.0
      77.0       4.6
      87.0       1.6
      88.0       1.4
      89.0      19.4
      90.0      13.1
      91.0       1.3
     101.0       1.4
     102.0       2.4
     105.0       3.8
     118.0       9.1
     135.0       1.1
     146.0     100.0
     147.0       9.9
     172.0       1.0
     173.0      94.7
     174.0      33.5
     175.0       3.9
     190.0       4.4
     203.0       1.9
     218.0      60.8
     219.0       8.0
     220.0       1.0