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MassMS-NW-0060 dimethyl maleate C6H8O4 (Mass of molecular ion: 144)
Source Temperature: 230 °C Sample Temperature: 55 °C Reservoir, 75 eV
15.0 10.4 18.0 1.2 26.0 5.4 27.0 1.6 28.0 1.1 29.0 2.6 39.0 1.2 41.0 1.0 53.0 3.1 54.0 5.0 55.0 2.3 59.0 17.8 82.0 2.1 85.0 9.6 113.0 100.0 114.0 8.0 115.0 1.0
parameter in CDCl3
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1H NMR 300 MHz C6 H8 O4 9.9 mol% in CDCl3 dimethyl maleate 
Parameter ppm Hz
D(A) 3.725 D(B) 6.204
Hz ppm Int.1861.20 6.204 333 1117.49 3.725 1000
in CDCl3
liquid film
4880 A,200 M,liquid
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