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MassMS-NW-4850 tert-butyl methacrylate C8H14O2 (Mass of molecular ion: 142)
Source Temperature: 260 °C Sample Temperature: 180 °C Reservoir, 75 eV
15.0 2.1 27.0 4.0 28.0 1.5 29.0 16.3 31.0 1.3 38.0 1.1 39.0 12.5 40.0 3.1 41.0 53.3 42.0 2.3 43.0 3.5 55.0 3.1 56.0 24.6 57.0 100.0 58.0 4.5 59.0 3.2 69.0 50.3 70.0 2.4 86.0 1.4 87.0 16.2 91.0 4.7 97.0 1.0 106.0 2.3 124.0 1.2 127.0 2.2
90 MHz in CDCl3
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1H NMR 89.56 MHz C8 H14 O2 0.04 ml : 0.5 ml CDCl3 tert-butyl methacrylate 
Assign. Shift(ppm)
A 1.491 B 1.895 C 5.465 D 5.995
Hz ppm Int.538.31 6.011 33 537.31 6.000 42 536.38 5.990 43 535.44 5.979 33 490.69 5.479 33 489.13 5.462 41 487.25 5.441 32 170.94 1.909 127 169.94 1.898 147 169.38 1.892 143 168.38 1.881 119 133.56 1.492 1000
in CDCl3
CCl4 solution
liquid film
4880 A,200 M,liquid
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