1,2,3,6,7,8-Hexahydropyrene-2,2,7,7-tetracarboxylic acid tetraethyl ester

Mass

MS-IW-2024          
tetraethyl 1,2,3,6,7,8-hexahydro-2,2,7,7-pyrenetetracarboxylate
C28H32O8            (Mass of molecular ion:    496)

   Source Temperature: 210 °C
   Sample Temperature: 170 °C
   Direct, 75 eV

      27.0       1.1
      28.0       2.3
      29.0      10.2
      44.0       2.4
      57.0       1.0
     101.0       1.0
     189.0       1.5
     200.0       1.5
     201.0       4.7
     202.0      34.4
     203.0      69.0
     204.0      14.6
     205.0       2.7
     229.0       4.0
     230.0       1.9
     231.0      11.7
     232.0       3.1
     246.0       5.5
     247.0      15.8
     248.0       5.2
     249.0       2.1
     273.0       1.6
     274.0       1.6
     275.0      17.9
     276.0       8.2
     277.0       9.7
     278.0       2.1
     291.0       4.4
     292.0       1.3
     303.0       1.6
     305.0       3.5
     319.0       8.6
     320.0       3.4
     321.0       4.5
     322.0       1.0
     348.0       8.9
     349.0      94.2
     350.0      25.4
     351.0       4.9
     376.0       1.4
     377.0       3.8
     378.0       1.3
     393.0      79.9
     394.0      23.5
     395.0      11.3
     396.0       2.3
     422.0      30.9
     423.0      34.3
     424.0      10.4
     425.0       1.9
     451.0       2.2
     496.0     100.0
     497.0      31.3
     498.0       6.2

Assign. Shift(ppm) A 7.213 B 4.093 C 3.566 D 1.108

     Hz     ppm     Int.

   2882.81   7.214    456
   1646.73   4.121    141
   1639.65   4.103    459
   1632.57   4.085    459
   1625.49   4.068    145
   1425.29   3.567    711
    449.83   1.126    472
    442.75   1.108   1000
    435.67   1.091    458