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21691-43-0

N-CARBOBENZOXY-DL-NORVALINE

Product Name N-CARBOBENZOXY-DL-NORVALINE

CAS21691-43-0

MFC13H17NO4

MW251.28

More

  • 21691-43-0_ms
    Mass

    MS-NW-2357          
    N-benzyloxycarbonyl-DL-norvaline
    C13H17NO4           (Mass of molecular ion:    251)
    

       Source Temperature: 240 °C
       Sample Temperature: 170 °C
       Direct, 75 eV
    

          15.0       3.7
          17.0       1.6
          18.0       7.3
          26.0       3.6
          27.0      28.0
          28.0      44.4
          29.0      10.8
          30.0       4.6
          31.0       2.8
          37.0       2.2
          38.0       4.2
          39.0      19.7
          40.0       3.0
          41.0      26.1
          42.0       5.5
          43.0     100.0
          44.0       9.4
          45.0       1.4
          49.0       1.2
          50.0       8.6
          51.0      18.5
          52.0       6.0
          53.0       5.5
          53.5       1.1
          54.0       3.0
          55.0       7.5
          56.0      16.9
          57.0       1.3
          61.0       1.0
          62.0       2.2
          63.0       5.4
          64.0       1.6
          65.0      11.6
          66.0       1.0
          70.0       4.4
          71.0       7.0
          72.0       3.0
          73.0       7.7
          74.0       4.3
          75.0       1.5
          76.0       1.2
          77.0      40.0
          78.0       9.1
          79.0      83.4
          80.0       8.6
          82.0       1.0
          83.0       4.3
          89.0       6.3
          90.0       8.4
          91.0      70.1
          92.0       7.3
          98.0      19.5
          99.0       1.9
         101.0      26.2
         102.0       1.0
         105.0       3.3
         106.0       1.2
         107.0      57.4
         108.0      92.2
         109.0       7.1
         116.0       3.2
         162.0       4.4
    

400 MHz in CDCl3

  • 21691-43-0_1hnmr

    1H NMR 399.65 MHz
    C13 H17 N O4 0.048 g : 0.5 ml CDCl3
    N-benzyloxycarbonyl-DL-norvaline
    ChemicalStructure
        Assign.     Shift(ppm)
    A 11.3 B 7.35 to 7.32 C 6.50 C 5.38 D 5.14 to 5.11 E 4.409 E 4.25 F *1 1.84 G *1 1.67 K 1.40 L 0.93 MIXTURE OF ISOMERS DUE TO C-N RESTRICTED ROTATION

         Hz     ppm     Int.
    

       4503.33  11.269     41
       2945.13   7.370     75
       2939.09   7.355    353
       2934.69   7.344   1000
       2928.10   7.327    287
       2925.54   7.321    273
       2919.67   7.306    130
       2917.66   7.301     92
       2914.73   7.294     52
       2155.14   5.393     99
       2151.29   5.383     33
       2146.89   5.372    102
       2057.33   5.148    114
       2056.23   5.146    107
       2052.38   5.136     51
       2050.73   5.132     43
       2043.22   5.113    413
       2042.12   5.110    398
       1772.87   4.437     40
       1767.56   4.423     54
       1764.81   4.416     78
       1759.68   4.404     77
       1756.75   4.396     53
       1751.62   4.383     40
        685.78   1.716     41
        679.18   1.700     62
        677.90   1.697     71
        670.76   1.679     89
        664.16   1.662     81
        662.70   1.659     73
        656.65   1.644     76
        648.96   1.624     36
        576.79   1.444     32
        576.42   1.443     32
        569.28   1.425     93
        567.27   1.420     62
        566.72   1.419     61
        566.35   1.418     60
        562.14   1.407    160
        559.94   1.402    109
        559.57   1.401    109
        554.99   1.389    155
        552.98   1.384    123
        547.67   1.371     83
        545.84   1.366     84
        538.69   1.348     31
        379.34   0.950    241
        372.19   0.932    468
        364.87   0.913    256
        361.75   0.906    115
        361.20   0.904    115
        360.65   0.903    115
        355.34   0.890     49
        354.98   0.889     49
        354.61   0.888     49
        354.06   0.886     50
        353.33   0.885     50
        352.96   0.884     50
    

in CDCl3

  • 21691-43-0_13cnmr

KBr disc

  • 21691-43-0_ir1_2

nujol mull

  • 21691-43-0_ir2_1

4880 A,200 M,powder

  • 21691-43-0_raman