Ibuprofen

Mass

MS-IW-2149          
2-(p-isobutylphenyl)propionic acid
C13H18O2            (Mass of molecular ion:    206)

   Source Temperature: 220 °C
   Sample Temperature: 160 °C
   Reservoir, 75 eV

      18.0       1.5
      27.0       3.7
      29.0       1.8
      39.0       4.4
      41.0       9.2
      43.0       9.5
      45.0       1.0
      51.0       2.7
      53.0       1.4
      55.0       1.8
      57.0       3.6
      63.0       2.0
      65.0       3.5
      77.0       6.3
      78.0       2.4
      79.0       2.9
      89.0       1.9
      91.0      46.7
      92.0       4.2
      93.0       1.4
     102.0       1.3
     103.0       4.9
     104.0       3.6
     105.0       9.3
     106.0       1.0
     107.0      28.1
     108.0       2.2
     115.0       8.8
     116.0       3.2
     117.0      25.3
     118.0      19.6
     119.0      44.3
     120.0       4.7
     128.0       2.6
     129.0       1.5
     131.0       2.5
     133.0       2.1
     145.0       5.5
     146.0       1.0
     159.0       1.3
     161.0      96.9
     162.0      13.2
     163.0     100.0
     164.0      23.7
     165.0       2.3
     177.0       1.6
     191.0       1.9
     206.0      45.9
     207.0       6.6