HEPES

Mass

MS-NW-9023          
4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid
C8H18N2O4S          (Mass of molecular ion:    238)

   Source Temperature: 240 °C
   Sample Temperature: 250 °C
   Direct, 75 eV

      14.0       1.1
      15.0      10.0
      17.0       5.5
      18.0      22.1
      25.0       1.3
      26.0      13.7
      27.0      57.8
      28.0      27.5
      29.0      16.7
      30.0      10.2
      31.0       1.0
      32.0       1.5
      39.0       2.7
      40.0       2.8
      41.0      16.5
      42.0      85.5
      43.0      36.3
      44.0      43.0
      45.0       3.5
      48.0      10.3
      49.0       1.5
      52.0       2.0
      53.0       1.5
      54.0      12.6
      55.0      73.6
      56.0      61.7
      57.0      62.8
      58.0      31.6
      59.0       1.9
      60.0       1.2
      63.0       1.1
      64.0      13.7
      65.0      51.1
      66.0       2.4
      67.0       3.2
      68.0       6.1
      69.0      10.9
      70.0      37.4
      71.0       4.0
      72.0       6.9
      73.0       1.6
      74.0       1.8
      80.0       1.8
      81.0       4.5
      82.0      14.5
      83.0      13.4
      84.0      26.0
      85.0       7.6
      86.0       3.2
      88.0       9.3
      91.0       5.6
      93.0       1.0
      94.0       1.3
      95.0       1.0
      97.0       9.1
      98.0       6.5
      99.0      37.9
     100.0      10.3
     108.0       3.2
     109.0       1.8
     111.0       5.8
     112.0     100.0
     113.0      11.1
     114.0       2.4
     115.0       1.0
     125.0       1.4
     126.0       1.1
     127.0       4.3
     128.0       1.8
     130.0       1.0
     141.0       2.2
     143.0       6.3
     144.0       1.0
     157.0       1.4
     207.0       1.5