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MassMS-KW-0519 (S)-(+)-2-(4-isobutylphenyl)propionic acid C13H18O2 (Mass of molecular ion: 206)
Source Temperature: 140 °C Sample Temperature: 120 °C Direct, 75 eV
27.0 5.9 28.0 1.3 29.0 3.0 39.0 6.4 41.0 13.7 43.0 13.4 45.0 1.1 51.0 3.5 53.0 1.7 55.0 2.4 57.0 5.5 63.0 2.0 64.0 1.1 65.0 4.1 77.0 6.1 78.0 2.3 79.0 3.0 89.0 1.7 91.0 48.7 92.0 4.2 93.0 1.4 102.0 1.0 103.0 4.2 104.0 3.0 105.0 8.9 106.0 1.0 107.0 29.8 108.0 2.4 115.0 7.2 116.0 2.6 117.0 19.9 118.0 16.4 119.0 42.1 120.0 4.4 128.0 1.8 129.0 1.2 131.0 2.0 133.0 2.4 145.0 3.5 159.0 1.2 161.0 100.0 162.0 13.9 163.0 93.5 164.0 26.5 165.0 2.7 191.0 1.9 206.0 50.1 207.0 7.4
400 MHz in CDCl3
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1H NMR 399.65 MHz C13H18O2 0.039 g : 0.5 ml CDCl3 (S)-(+)-2-(4-isobutylphenyl)propionic acid 
Assign. Shift(ppm)
A 7.210 B 7.092 C 3.695 D 2.437 E 1.835 F 1.489 G 0.890
Hz ppm Int.2886.85 7.222 220 2878.91 7.202 275 2838.38 7.100 267 2830.21 7.080 193 1487.92 3.722 38 1480.72 3.704 103 1473.52 3.686 103 1466.44 3.669 37 977.91 2.447 264 970.71 2.429 274 747.56 1.870 35 740.73 1.853 62 734.01 1.837 76 727.30 1.820 62 720.59 1.803 34 713.63 1.786 14 598.52 1.498 467 591.44 1.480 456 420.29 1.052 10 358.65 0.898 1000 352.06 0.881 958 295.54 0.740 11
in CDCl3
KBr disk
Nujol
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