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3,4,5-TRIMETHOXYBENZOIC ANHYDRIDE

Product Name 3,4,5-TRIMETHOXYBENZOIC ANHYDRIDE

CAS1719-88-6

MFC20H22O9

MW406.38

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  • Mass 

    MS-NW-6995          
3,4,5-trimethoxybenzoic anhydride
C20H22O9            (Mass of molecular ion:    406)


       Source Temperature: 220 °C
   Sample Temperature: 170 °C
   Direct, 75 eV


          53.0       1.8
      66.0       3.0
      77.0       3.4
      79.0       1.0
      81.0       3.7
      92.0       1.3
      96.0       1.1
     107.0       1.2
     109.0       2.6
     122.0       2.5
     124.0       1.5
     137.0       3.2
     139.0       1.4
     152.0       4.4
     167.0       2.3
     195.0     100.0
     196.0      11.1
     197.0       2.2
     212.0       1.6
     362.0       2.6
     406.0      27.2
     407.0       6.0
     408.0       1.1

parameter in CDCl3


  • 1H NMR 300 MHz
    C20 H22 O9 0.035 g : 0.5 ml CDCl3
    3,4,5-trimethoxybenzoic anhydride
    ChemicalStructure 
        Parameter     ppm  Hz
    
      D(A)         7.387
     
      D(B)         3.963
     
      D(C)         3.931
  

         Hz     ppm     Int.


       2216.11   7.387    333
   1188.91   3.963    501
   1179.32   3.931   1000

in CDCl3



KBr disc



nujol mull



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