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MassMS-NW-0151 2-methylquinoxaline C9H8N2 (Mass of molecular ion: 144)
Source Temperature: 220 °C Sample Temperature: 75 °C Reservoir, 75 eV
18.0 1.8 26.0 1.4 27.0 2.0 28.0 2.5 37.0 2.2 38.0 3.8 39.0 8.5 40.0 1.1 42.0 1.5 50.0 21.4 51.0 6.4 52.0 3.1 58.5 5.5 61.0 1.0 62.0 1.8 63.0 4.1 64.0 2.8 72.0 4.2 74.0 5.2 75.0 10.2 76.0 37.7 77.0 20.9 78.0 2.0 89.0 3.8 90.0 6.8 91.0 1.1 102.0 5.3 103.0 7.6 116.0 4.3 117.0 80.4 118.0 7.9 129.0 1.1 143.0 2.6 144.0 100.0 145.0 10.9
90 MHz in CDCl3
400 MHz in CDCl3
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1H NMR 89.56 MHz C9 H8 N2 0.022 g : 0.5 ml CDCl3 2-methylquinoxaline 
Assign. Shift(ppm)
A 8.74 B 8.18 to 7.88 C 7.88 to 7.55 D 2.775
Hz ppm Int.782.75 8.740 250 728.13 8.131 47 725.69 8.103 33 723.19 8.075 87 721.38 8.055 57 718.94 8.028 108 715.88 7.994 55 713.94 7.972 97 700.00 7.816 36 695.94 7.771 131 694.88 7.759 119 693.25 7.741 81 690.75 7.713 94 690.06 7.706 86 687.81 7.680 63 685.56 7.655 99 248.56 2.776 1000
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1H NMR 399.65 MHz C9 H8 N2 0.022 g : 0.5 ml CDCl3 2-methylquinoxaline Assign. Shift(ppm)
A 8.749 B *1 8.076 C *1 8.020 D *2 7.74 E *2 7.72 F 2.781
Hz ppm Int.3496.58 8.750 249 3232.42 8.089 65 3231.08 8.085 55 3230.22 8.083 51 3224.49 8.069 92 3222.66 8.064 75 3210.94 8.035 64 3210.45 8.034 62 3208.98 8.030 89 3203.13 8.015 59 3202.15 8.013 67 3201.17 8.010 78 3104.86 7.769 35 3103.15 7.765 41 3097.90 7.752 84 3096.19 7.748 76 3094.97 7.745 38 3089.97 7.732 90 3088.01 7.727 133 3086.30 7.723 89 3081.18 7.710 39 3080.08 7.707 67 3078.49 7.703 68 3073.12 7.690 33 1111.57 2.782 1000
in CDCl3
liquid film
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