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MassMS-NW-6390 trans-3,4-dimethoxycinnamic acid C11H12O4 (Mass of molecular ion: 208)
Source Temperature: 140 °C Sample Temperature: 90 °C Direct, 75 eV
15.0 1.9 17.0 2.6 18.0 13.0 28.0 2.0 38.0 1.1 39.0 2.3 41.0 1.0 44.0 1.0 45.0 1.3 50.0 2.8 51.0 6.0 52.0 1.2 53.0 1.4 55.0 2.3 62.0 1.4 63.0 3.2 65.0 2.1 66.0 2.3 69.0 1.5 74.0 1.2 75.0 1.2 76.0 2.1 77.0 8.1 78.0 2.1 79.0 2.3 89.0 3.2 90.0 1.0 91.0 6.7 92.0 1.1 94.0 1.9 95.0 2.2 95.5 1.0 102.0 1.4 103.0 4.2 104.0 2.0 105.0 3.0 106.0 1.0 107.0 1.4 109.0 2.3 117.0 1.6 118.0 1.5 119.0 5.4 120.0 1.1 121.0 1.4 122.0 1.1 123.0 3.4 131.0 1.0 133.0 6.2 134.0 1.4 137.0 3.3 145.0 1.4 147.0 6.5 148.0 1.5 149.0 1.7 150.0 1.1 161.0 3.8 162.0 1.5 163.0 1.9 165.0 2.3 190.0 1.1 191.0 3.5 192.0 1.6 193.0 18.8 194.0 2.5 207.0 1.1 208.0 100.0 209.0 12.9 210.0 1.9
90 MHz in CDCl3
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1H NMR 89.56 MHz C11 H12 O4 0.043 g : 0.5 ml CDCl3 trans-3,4-dimethoxycinnamic acid 
Assign. Shift(ppm)
A 9.9 B 7.73 C 7.16 D 7.09 E 6.88 F 6.33 G 3.92 J(B,F)=16.2HZ
Hz ppm Int.701.28 7.831 76 685.47 7.654 96 634.72 7.088 224 619.59 6.919 114 573.71 6.406 95 558.15 6.233 76 557.73 6.228 76 351.28 3.923 1000
in CDCl3
KBr disc
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