3-(2,3,4-三甲氧基苯基)丙酸(33130-04-0)核磁图(¹³CNMR)

Mass

MS-IW-0805          
3-(2,3,4-trimethoxyphenyl)propionic acid
C12H16O5            (Mass of molecular ion:    240)

   Source Temperature: 120 °C
   Sample Temperature: 100 °C
   Direct, 75 eV

      18.0       1.4
      28.0       1.0
      39.0       1.0
      55.0       1.4
      65.0       1.7
      77.0       2.6
      79.0       1.1
      91.0       5.2
      95.0       1.5
     105.0       1.5
     106.0       1.7
     107.0       1.2
     120.0       1.1
     121.0       2.9
     123.0       4.0
     133.0       2.0
     135.0       1.4
     136.0       7.2
     137.0       2.3
     149.0       2.1
     151.0       3.4
     153.0       1.9
     161.0       1.1
     165.0       2.7
     166.0      33.7
     167.0       6.4
     168.0       1.2
     179.0       1.9
     180.0       1.0
     181.0     100.0
     182.0      10.9
     183.0       3.3
     192.0       1.3
     193.0       5.3
     194.0       4.4
     195.0       1.1
     209.0       2.2
     225.0       1.1
     240.0      92.5
     241.0      12.3
     242.0       1.7

Assign. Shift(ppm) A 11. B 6.851 C 6.600 D *1 3.900 E *1 3.865 F *1 3.839 G 2.887 J 2.642

     Hz     ppm     Int.

   2742.74   6.863     94
   2734.13   6.842    114
   2641.63   6.610    128
   2633.02   6.589    113
   1558.93   3.901   1000
   1544.83   3.866    984
   1534.39   3.840    795
   1162.37   2.909     62
   1154.86   2.890    115
   1151.57   2.882     23
   1146.81   2.870     87
   1063.46   2.661     96
   1058.89   2.650     24
   1056.69   2.645     75
   1055.22   2.641    143
   1053.02   2.635     27
   1047.90   2.623     70