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网站主页CAS数据库列表 99-32-1更多图谱白屈菜酸(99-32-1)红外图谱(IR1)

白屈菜酸

产品名称 白屈菜酸

CAS号99-32-1

分子式C7H4O6

分子量184.1


  • Mass

    MS-KW-0494          
    4-oxo-4H-pyran-2,6-dicarboxylic acid
    C7H4O6 H2O          (Mass of molecular ion:    184)
    

       Source Temperature: 190 °C
       Sample Temperature: 210 °C
       Direct, 75 eV
    

          14.0       1.5
          16.0       1.2
          17.0       1.3
          18.0       6.3
          25.0       1.8
          26.0       5.4
          28.0      25.4
          29.0       2.6
          37.0       2.4
          38.0       3.4
          39.0       4.1
          40.0       1.9
          41.0      13.6
          42.0       8.4
          43.0       1.0
          44.0      56.7
          45.0       6.6
          49.0       1.2
          50.0       2.7
          52.0       1.1
          53.0      15.7
          54.0       1.9
          55.0       1.4
          66.0       2.2
          68.0       2.6
          69.0     100.0
          70.0       8.7
          71.0       8.2
          95.0       4.5
          96.0       3.5
         111.0       1.2
         112.0       4.2
         128.0       4.1
         139.0      13.4
         140.0       9.2
         156.0      28.9
         157.0       2.0
         167.0       2.0
         184.0      32.3
         185.0       2.9
    

400 MHz in DMSO-d6


  • 1H NMR 399.65 MHz
    C7 H4 O6 0.034 g : 0.5 ml DMSO-d6
    4-oxo-4H-pyran-2,6-dicarboxylic acid
    ChemicalStructure
        Assign.     Shift(ppm)
    A 8. B 6.964

         Hz     ppm     Int.
    

       2783.20   6.965   1000
    

in DMSO-d6



KBr disc



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