2,3,4,5,6-五甲基苯甲酸(2243-32-5)质谱(MS)

Mass

MS-IW-8068          
pentamethylbenzoic acid
C12H16O2            (Mass of molecular ion:    192)

   Source Temperature: 140 °C
   Sample Temperature: 110 °C
   Direct, 75 eV

      18.0       2.0
      27.0       1.3
      28.0       1.0
      39.0       2.7
      41.0       3.2
      43.0       1.8
      51.0       2.5
      53.0       2.2
      55.0       1.5
      58.0       1.6
      63.0       1.3
      64.0       2.7
      64.5       1.3
      65.0       3.2
      71.0       2.3
      72.0       1.5
      73.0       1.6
      77.0       4.0
      78.0       1.7
      79.0       3.0
      79.5       1.2
      80.0       1.7
      81.0       2.0
      87.0       3.1
      91.0       9.0
      93.0       1.5
      96.0       5.2
     103.0       1.4
     105.0       5.7
     107.0       1.3
     115.0       5.1
     116.0       3.0
     117.0       4.4
     119.0       3.9
     121.0       1.3
     128.0       2.4
     129.0       2.7
     130.0       1.5
     131.0      22.0
     132.0       3.6
     133.0       9.3
     134.0       1.2
     145.0       2.5
     146.0      13.1
     147.0      44.9
     148.0       6.9
     149.0       1.6
     159.0       4.6
     174.0      41.5
     175.0      15.1
     176.0       1.9
     177.0      23.3
     178.0       3.3
     191.0       4.1
     192.0     100.0
     193.0      13.2
     194.0       1.2