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S-甲基-L-半胱氨酸

产品名称 S-甲基-L-半胱氨酸

CAS号1187-84-4

分子式C4H9NO2S

分子量135.18

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  • Mass

    MS-NW-4973          
    S-methyl-L-cysteine
    C4H9NO2S            (Mass of molecular ion:    135)
    

       Source Temperature: 200 °C
       Sample Temperature: 120 °C
       Direct, 75 eV
    

          14.0       1.1
          15.0       7.8
          17.0       1.1
          18.0       4.9
          19.0       1.3
          27.0       8.9
          28.0      31.6
          29.0       2.6
          30.0      12.0
          35.0      11.1
          40.0       1.5
          41.0       5.4
          42.0      20.0
          43.0      36.1
          44.0       9.0
          45.0      10.8
          46.0      10.5
          47.0      11.8
          48.0       3.7
          49.0       1.0
          56.0       1.6
          57.0       1.5
          58.0       1.5
          59.0       1.6
          60.0       1.2
          61.0     100.0
          62.0      71.6
          63.0       6.5
          64.0       3.4
          70.0       1.0
          73.0       2.4
          74.0      58.3
          75.0       8.5
          87.0      11.7
          88.0       1.3
          89.0       1.2
          90.0      37.7
          91.0       1.8
          92.0       1.7
         103.0       1.1
         118.0       3.9
         135.0      30.2
         136.0       2.0
         137.0       1.6
    

400 MHz in D2O


  • 1H NMR 399.65 MHz
    C4 H9 N O2 S 0.035 g : 0.5 ml D2O
    S-methyl-L-cysteine
    ChemicalStructure
        Assign.     Shift(ppm)
    A 3.947 B *1 3.098 C *1 3.013 D 2.162 THE SOLVENT PEAK SUPPRESSED.

         Hz     ppm     Int.
    

       1583.50   3.963     71
       1579.22   3.952     78
       1575.81   3.943     85
       1571.53   3.933     75
       1250.49   3.129     42
       1246.22   3.119     46
       1235.72   3.093     95
       1231.45   3.082     90
       1212.77   3.035     90
       1205.08   3.016     86
       1197.88   2.998     42
       1190.19   2.979     42
        864.26   2.163   1000
    

in D2O



KBr disc



nujol mull