(+/-)AMETHOPTERIN

Mass

MS-IW-2019          
DL-amethopterin
C20H22N8O5 H2O      (Mass of molecular ion:    454)

   Source Temperature: 230 °C
   Sample Temperature: 200 °C
   Direct, 75 eV

      17.0       6.8
      18.0      34.7
      26.0       1.4
      27.0       3.6
      28.0      22.5
      29.0       2.6
      30.0       1.8
      39.0       3.7
      40.0       1.1
      41.0      27.6
      42.0       3.2
      43.0       4.2
      44.0      16.8
      45.0       2.2
      50.0       1.0
      51.0       2.0
      52.0       1.3
      52.5       1.0
      53.0       1.6
      54.0       2.1
      55.0       3.5
      56.0       7.0
      57.0       1.1
      65.0       2.9
      66.0       2.5
      66.5       1.0
      67.0       1.3
      68.0       1.1
      73.0       1.1
      77.0       5.6
      78.0       2.0
      79.0       6.0
      80.0       2.4
      82.0       2.4
      83.0       2.8
      84.0     100.0
      85.0       5.3
     104.0       1.7
     105.0       1.2
     106.0      14.1
     107.0      10.3
     108.0       2.2
     120.0       1.0
     129.0       3.9
     130.0       1.1
     132.0       1.5
     133.0       2.2
     134.0      22.4
     135.0       4.3
     148.0       2.1
     149.0       1.6
     150.0      17.5
     151.0      29.1
     152.0       3.0
     175.0       8.1
     176.0      33.6
     177.0       4.0
     278.0       1.2