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吡嗪-2,3-二羧酸单酰胺

产品名称 吡嗪-2,3-二羧酸单酰胺

CAS号67367-37-7

分子式C6H5N3O3

分子量167.12

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  • Mass

    MS-IW-4870          
    3-carbamoyl-2-pyrazinecarboxylic acid
    C6H5N3O3            (Mass of molecular ion:    167)
    

       Source Temperature: 170 °C
       Sample Temperature: 160 °C
       Direct, 75 eV
    

          16.0       1.6
          17.0       1.7
          18.0       3.0
          25.0       1.1
          26.0      19.3
          27.0       1.8
          28.0      19.7
          29.0       1.0
          38.0       2.1
          39.0       2.8
          40.0       2.7
          41.0       2.5
          42.0       1.4
          43.0       1.6
          44.0      48.9
          45.0       5.3
          50.0       2.0
          51.0      16.6
          52.0      54.3
          53.0      56.8
          54.0       3.4
          67.0       1.6
          68.0       3.6
          69.0       1.7
          70.0       3.6
          77.0       3.7
          78.0      29.4
          79.0      28.7
          80.0     100.0
          81.0       5.6
          95.0       1.0
          96.0       1.4
          97.0       1.4
         105.0       5.2
         106.0      20.0
         107.0       2.6
         123.0      96.4
         124.0      13.2
         149.0      11.5
         150.0       3.7
         168.0       1.2
    

400 MHz in DMSO-d6


  • 1H NMR 399.65 MHz
    C6 H5 N3 O3 0.038 g : 0.5 ml DMSO-d6
    3-carbamoyl-2-pyrazinecarboxylic acid
    ChemicalStructure
        Assign.     Shift(ppm)
    A 13.6 B *1 8.849 C *1 8.812 D *2 8.30 E *2 7.92

         Hz     ppm     Int.
    

       5450.01  13.637     62
       3543.31   8.867     23
       3538.18   8.854    762
       3535.62   8.847    994
       3530.49   8.834     24
       3529.85   8.833     22
       3527.71   8.828     31
       3523.01   8.816   1000
       3520.66   8.810    701
       3319.37   8.306    214
       3166.58   7.924    213
    

in DMSO-d6



KBr disc



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