4H-1-Benzopyran-2-carboxylic acid, 6-methyl-4-oxo-, ethyl ester(38322-65-5) IR1

Mass

MS-IW-3067          
ethyl 6-methyl-4-oxo-4H-chromene-2-carboxylate
C13H12O4            (Mass of molecular ion:    232)

   Source Temperature: 140 °C
   Sample Temperature: 100 °C
   Direct, 75 eV

      27.0       2.9
      28.0       1.6
      29.0       9.1
      39.0       2.2
      45.0       2.1
      50.0       1.8
      51.0       5.4
      52.0       2.3
      53.0       2.4
      62.0       1.5
      63.0       3.8
      64.0       1.1
      65.0       1.5
      69.0       4.6
      75.0       1.2
      76.0       1.5
      77.0      11.9
      78.0       4.4
      89.0       4.2
      90.0       5.9
      91.0       2.8
     102.0       2.6
     103.0      14.7
     104.0       2.1
     105.0       2.9
     106.0       3.5
     107.0       4.6
     108.0       1.2
     115.0       2.2
     118.0       1.3
     119.0       6.0
     131.0       7.8
     132.0       3.2
     133.0       2.3
     134.0       6.2
     135.0       1.7
     159.0       9.1
     160.0       9.1
     161.0       1.6
     175.0       2.4
     176.0       7.1
     187.0       6.8
     188.0       1.7
     203.0       3.2
     204.0      35.8
     205.0       4.5
     218.0       2.0
     231.0       1.6
     232.0     100.0
     233.0      14.6
     234.0       1.9