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MassMS-NW-3781 ethyl stearate C20H40O2 (Mass of molecular ion: 312)
Source Temperature: 190 °C Sample Temperature: 100 °C Direct, 75 eV
27.0 3.4 28.0 1.3 29.0 12.6 39.0 1.7 41.0 14.8 42.0 3.4 43.0 22.6 45.0 3.0 54.0 1.2 55.0 13.6 56.0 3.3 57.0 14.2 60.0 5.1 61.0 6.7 67.0 2.0 68.0 1.0 69.0 8.4 70.0 6.9 71.0 6.0 73.0 8.0 74.0 1.0 81.0 1.8 83.0 5.6 84.0 2.6 85.0 3.2 87.0 1.3 88.0 100.0 89.0 22.2 90.0 1.2 95.0 1.6 97.0 4.3 98.0 2.6 101.0 45.5 102.0 4.0 111.0 2.1 115.0 4.6 125.0 1.1 129.0 1.9 130.0 1.1 143.0 4.9 144.0 1.5 157.0 13.2 158.0 1.6 171.0 1.3 185.0 1.2 199.0 2.1 213.0 3.2 227.0 1.4 239.0 1.4 241.0 1.9 255.0 1.2 267.0 4.7 269.0 4.5 270.0 1.0 283.0 1.1 284.0 6.5 285.0 1.3 298.0 1.2 312.0 24.2 313.0 5.7
90 MHz in CDCl3
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1H NMR 89.56 MHz C20 H40 O2 0.04 ml : 0.5 ml CDCl3 ethyl stearate 
Assign. Shift(ppm)
A 4.119 B 2.28 C 1.62 D 1.251 E 1.43 to 1.09 F 0.89
Hz ppm Int.372.75 4.163 65 365.63 4.083 69 358.50 4.003 22 204.81 2.287 29 197.13 2.202 26 119.00 1.329 114 112.69 1.259 1000 104.75 1.170 85 78.81 0.880 53
in CDCl3
CCl4 solution
KBr disc
liquid film
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