Mass

MS-NW-5403          
5-bromo-2,4(1H,3H)-pyrimidinedione
C4H3BrN2O2          (Mass of molecular ion:    190)

   Source Temperature: 160 °C
   Sample Temperature: 110 °C
   Direct, 75 eV

      12.0       1.4
      13.0       1.3
      18.0       3.5
      25.0       3.4
      26.0       1.7
      27.0       5.0
      28.0      59.3
      29.0       2.7
      38.0       9.6
      39.0      15.1
      40.0      34.7
      41.0       7.0
      42.0       3.0
      43.0       6.4
      44.0       6.0
      51.0       2.0
      52.0       1.3
      53.0       8.1
      54.0       1.9
      55.0       3.5
      67.0       5.1
      68.0       4.1
      69.0       1.9
      70.0       5.5
      79.0       3.4
      80.0       2.2
      81.0       3.2
      82.0       2.6
      91.0       7.3
      92.0      11.0
      93.0       7.4
      94.0      11.1
     104.0       7.3
     106.0       7.7
     111.0       2.5
     112.0       2.6
     117.0       1.1
     118.0       6.4
     119.0       3.2
     120.0      61.2
     121.0       3.3
     122.0      54.8
     123.0       1.4
     146.0       1.2
     147.0      87.9
     148.0       6.3
     149.0      85.1
     150.0       5.2
     190.0     100.0
     191.0       5.7
     192.0      97.7
     193.0       5.7

Parameter ppm Hz D(A) 7.83 D(B) 11.21 J(A,B) 6.0 D(C) 11.45 KOKKO,J.P. ET AL. J.AM.CHEM.SOC. 84, 1042 (1962)

     Hz     ppm     Int.

   3434.99  11.450   1000
   3366.00  11.220    501
   3360.03  11.200    506
   2351.97   7.840    506
   2346.04   7.820    501