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Back ChemicalBook Home>CAS DataBase List>110-16-7More Spectrum> Maleic acid(110-16-7) 1H NMR

Maleic acid(110-16-7) 1H NMR

Product NameMaleic acid

CAS110-16-7

Molecular FormulaC4H4O4

Molecular Weight116.07

InChIInChI=1S/C4H4O4/c5-3(6)1-2-4(7)8/h1-2H,(H,5,6)(H,7,8)/b2-1-

InChIKey VZCYOOQTPOCHFL-UPHRSURJSA-N

SmilesC(O)(=O)/C=C\C(O)=O


  • Mass

    MS-IW-4644          
    maleic acid
    C4H4O4              (Mass of molecular ion:    116)
    

       Source Temperature: 150 °C
       Sample Temperature: 130 °C
       Direct, 75 eV
    

          15.0       1.5
          17.0       3.2
          18.0      16.6
          24.0       1.2
          25.0       6.5
          26.0      46.2
          27.0      36.5
          28.0       9.7
          29.0       8.1
          37.0       1.0
          41.0       4.7
          42.0       3.6
          43.0       5.8
          44.0      12.5
          45.0      66.6
          46.0      16.8
          52.0       1.9
          53.0      16.9
          54.0      34.0
          55.0      32.8
          56.0       1.3
          69.0       2.0
          70.0       1.8
          71.0      14.5
          72.0     100.0
          73.0       4.3
          81.0       1.5
          82.0       1.9
          98.0      22.7
          99.0      30.9
         100.0       1.6
         116.0       2.2
         117.0       1.2
    

400 MHz in DMSO-d6


  • 1H NMR 399.65 MHz
    C4 H4 O4 0.041 g : 0.5 ml DMSO-d6
    maleic acid
    ChemicalStructure
        Assign.     Shift(ppm)
    A 11. B 6.285

         Hz     ppm     Int.
    

       2511.95   6.286   1000
    

in DMSO-d6



nujol mull



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