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MS-NW-0350 3,4-dihydroxycinnamic acid C9H8O4 (Mass of molecular ion: 180)
Source Temperature: 180 °C Sample Temperature: 170 °C Direct, 75 eV
18.0 3.3 26.0 1.4 27.0 5.5 28.0 3.6 29.0 2.3 37.0 1.4 38.0 3.2 39.0 9.9 40.0 1.3 41.0 1.6 43.0 2.0 44.0 22.1 44.5 1.8 45.0 1.9 49.0 1.1 50.0 6.1 51.0 12.5 52.0 5.4 53.0 5.3 53.5 1.5 54.0 1.3 55.0 5.8 61.0 1.5 62.0 6.6 63.0 11.7 64.0 3.4 65.0 2.4 66.0 1.2 67.0 4.5 67.5 2.2 68.0 2.5 69.0 2.4 74.0 1.7 75.0 1.3 76.0 1.7 77.0 12.2 78.0 7.4 79.0 6.8 80.0 1.5 81.0 2.4 81.5 1.9 82.0 1.1 87.0 1.4 88.0 4.0 89.0 26.5 90.0 9.2 91.0 1.7 92.0 1.2 93.0 1.3 95.0 1.3 105.0 3.5 106.0 5.2 107.0 8.0 108.0 1.5 110.0 5.6 117.0 9.5 118.0 2.5 119.0 1.8 120.0 1.0 123.0 6.0 126.0 1.3 133.0 3.1 134.0 33.9 135.0 21.0 136.0 63.1 137.0 5.9 138.0 1.7 139.0 1.0 144.0 1.0 145.0 5.6 151.0 1.2 152.0 2.1 161.5 1.1 162.0 4.1 162.5 5.8 163.0 24.0 164.0 2.9 170.0 1.5 179.0 14.6 180.0 100.0 181.0 10.1 182.0 1.4
90 MHz in DMSO-d6
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1H NMR 89.56 MHz C9 H8 O4 0.038 g : 0.5 ml DMSO-d6 3,4-dihydroxycinnamic acid Assign. Shift(ppm)
A 7.417 B 7.03 C 7.00 D 6.781 E 6.195 F 6.2 J(A,E)=15.9HZ.
Hz ppm Int.
673.34 7.519 491 657.42 7.341 660 629.69 7.031 1000 621.48 6.940 474 619.73 6.920 384 609.96 6.811 758 602.05 6.723 365 561.72 6.272 835 545.80 6.095 649
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