L-脲基丙氨酸

Mass

MS-NW-9132          
(-)-3-ureido-L-alanine
C4H9N3O3            (Mass of molecular ion:    147)

   Source Temperature: 220 °C
   Sample Temperature: 190 °C
   Direct, 75 eV

      15.0       4.4
      16.0       9.9
      17.0      18.1
      18.0      17.4
      27.0       1.9
      28.0      18.5
      29.0      12.6
      30.0     100.0
      31.0       6.3
      40.0       1.2
      41.0       3.8
      42.0      14.6
      43.0      20.7
      44.0      20.7
      45.0       2.1
      46.0       1.2
      56.0       2.4
      57.0      16.1
      58.0       4.4
      59.0       7.6
      60.0       1.7
      61.0       6.0
      69.0       1.6
      73.0      23.6
      74.0      10.7
      75.0      30.5
      84.0       3.8
      85.0      24.7
      86.0       4.9
      87.0       3.6
     102.0       3.3
     104.0       5.7
     112.0       1.5

Assign. Shift(ppm) A 3.876 B *1 3.717 C *1 3.530 THE SOLVENT PEAK SUPPRESSED.

     Hz     ppm     Int.

   1561.89   3.909     44
   1561.28   3.907     46
   1560.79   3.906     51
   1554.32   3.890    764
   1550.90   3.881    975
   1548.10   3.874   1000
   1544.56   3.865    948
   1497.44   3.747    611
   1494.02   3.739    604
   1488.04   3.724     87
   1482.18   3.709    893
   1478.76   3.701    872
   1470.95   3.681     49
   1420.41   3.555    812
   1413.94   3.538    762
   1405.27   3.517    579
   1398.80   3.501    525