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网站主页CAS数据库列表 98-97-5更多图谱2-甲酸吡嗪(98-97-5)核磁图(13CNMR)

2-甲酸吡嗪

产品名称 2-甲酸吡嗪

CAS号98-97-5

分子式C5H4N2O2

分子量124.1

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  • Mass

    MS-NW-7161          
    2-pyrazinecarboxylic acid
    C5H4N2O2            (Mass of molecular ion:    124)
    

       Source Temperature: 200 °C
       Sample Temperature: 180 °C
       Reservoir, 75 eV
    

          14.0       1.3
          16.0       1.0
          17.0       1.1
          18.0       4.2
          24.0       1.1
          25.0       5.2
          26.0      45.7
          27.0       4.7
          28.0      27.5
          29.0       2.1
          37.0       1.3
          38.0       4.8
          39.0       5.7
          39.5       3.6
          40.0       4.2
          41.0       2.4
          42.0       3.9
          44.0      18.4
          45.0      10.7
          50.0       3.7
          51.0      23.0
          52.0      68.5
          53.0      75.6
          54.0       3.7
          69.0       1.4
          70.0      16.6
          76.0       1.0
          77.0       2.5
          78.0       8.7
          79.0      31.4
          80.0     100.0
          81.0       5.4
         106.0      12.1
         107.0       3.9
         119.0       2.3
         124.0      49.3
         125.0       3.5
    

400 MHz in DMSO-d6


  • 1H NMR 399.65 MHz
    C5 H4 N2 O2 0.038 g : 0.5 ml DMSO-d6
    2-pyrazinecarboxylic acid
    ChemicalStructure
        Assign.     Shift(ppm)
    A 14. B 9.236 C 8.908 D 8.847

         Hz     ppm     Int.
    

       3691.82   9.238   1000
       3690.54   9.235    922
       3561.47   8.912    833
       3559.12   8.906    917
       3537.54   8.852    659
       3536.26   8.849    708
       3535.19   8.846    639
       3533.69   8.842    498
    

DMSO-d6



KBr disc



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