Biphenyl-2,3,3',4'-tetracarboxylic acid tetramethyl ester(36978-36-6) IR2

Mass

MS-KW-0011          
tetramethyl 2,3,3',4'-biphenyltetracarboxylate
C20H18O8            (Mass of molecular ion:    386)

   Source Temperature: 180 °C
   Sample Temperature: 160 °C
   Direct, 75 eV

      15.0       3.3
      28.0       2.3
      29.0       1.4
      31.0       1.0
      44.0       1.2
      45.0       2.1
      59.0       4.7
      75.0       1.7
      76.0       1.0
      89.5       1.3
     103.5       2.8
     119.0       1.2
     132.5       1.9
     133.0       1.5
     138.0       2.4
     139.0       2.3
     148.0       1.0
     149.0       1.1
     150.0       3.7
     151.0       6.2
     152.0       5.1
     153.0       1.7
     154.0       1.6
     162.0      29.1
     165.0       1.9
     166.0       1.6
     177.0       3.2
     178.0       1.5
     179.0       3.7
     180.0       3.1
     181.0       1.2
     193.0       1.0
     194.0       2.1
     195.0       1.0
     205.0       5.4
     206.0       1.9
     207.0       3.9
     208.0       1.3
     209.0       2.4
     210.0       1.3
     221.0       1.8
     222.0       1.6
     223.0       1.2
     235.0       1.1
     237.0       5.9
     238.0       5.9
     239.0       1.4
     251.0       1.5
     252.0       1.0
     253.0       1.9
     265.0       4.8
     266.0       1.9
     267.0       1.0
     268.0       1.8
     281.0       1.1
     295.0       3.4
     296.0       1.9
     297.0       1.4
     309.0      10.9
     310.0       4.0
     311.0       5.4
     312.0       1.2
     323.0      31.4
     324.0       9.1
     325.0       2.3
     327.0       4.3
     328.0       1.0
     339.0       1.8
     355.0     100.0
     356.0      21.4
     357.0       3.7
     386.0      32.4
     387.0       7.2
     388.0       1.3