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N-乙酰-L-半胱氨酸

CAS号616-91-1

分子式C5H9NO3S

分子量163.19

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  • Mass

    MS-NW-2509          
    N-acetyl-L-cysteine
    C5H9NO3S            (Mass of molecular ion:    163)
    

       Source Temperature: 190 °C
       Sample Temperature: 140 °C
       Direct, 75 eV
    

          15.0       7.2
          18.0       2.7
          27.0       2.5
          28.0       9.9
          29.0       1.0
          30.0       3.6
          41.0       2.3
          42.0       8.3
          43.0      83.6
          44.0       9.5
          45.0       4.0
          46.0       2.5
          47.0       5.0
          48.0       1.2
          57.0       6.9
          58.0       3.1
          59.0      13.0
          60.0     100.0
          61.0       2.7
          70.0       2.9
          71.0       1.7
          74.0      31.8
          75.0       5.9
          76.0      26.1
          78.0       1.1
          84.0       1.8
          85.0       2.9
          86.0       7.8
          87.0       2.9
          88.0       2.9
          99.0       8.7
         100.0       8.5
         101.0       1.0
         117.0       2.1
         118.0       3.3
         121.0       1.5
         130.0       1.0
         163.0       2.6
    

400 MHz in DMSO-d6


  • 1H NMR 399.65 MHz
    C5 H9 N O3 S 0.039 g : 0.5 ml DMSO-d6
    N-acetyl-L-cysteine
    ChemicalStructure
        Assign.     Shift(ppm)
    A 13. B 8.19 C 4.385 D *1 2.84 E *1 2.74 F 2.432 G 1.885 J(B,C)=7.9HZ

         Hz     ppm     Int.
    

       3277.49   8.201     67
       3269.58   8.182     69
       1762.89   4.412     39
       1758.19   4.400     47
       1755.63   4.393     72
       1750.50   4.381     72
       1747.72   4.374     54
       1743.02   4.362     42
       1144.49   2.864     21
       1131.03   2.831     38
       1100.47   2.754     33
       1094.06   2.738     29
        971.84   2.432     27
        753.45   1.886   1000
    

KBr disc



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