![图谱](https://www.chemicalbook.com/Spectrum/908099-97-8_MS_1.jpg)
Mass
MS2004-02431WA
2-methoxy-4-methyl-5-pyrimidinamine
C6H9N3O (Mass of molecular ion: 139)
Source Temperature: 250 °C
Sample Temperature: 20 °C
Direct, 70 eV
15.0 2.5
18.0 1.0
27.0 1.2
28.0 6.9
30.0 1.0
39.0 1.4
40.0 3.8
41.0 8.9
42.0 12.5
43.0 4.7
52.0 2.9
53.0 4.5
54.0 10.4
55.0 11.7
56.0 5.0
57.0 1.0
58.0 3.4
66.0 1.6
67.0 3.0
68.0 7.7
69.0 7.9
70.0 2.1
81.0 5.8
82.0 11.0
83.0 5.0
92.0 1.1
93.0 2.3
94.0 1.5
95.0 1.1
96.0 1.2
97.0 5.2
108.0 4.8
109.0 29.3
110.0 53.2
111.0 5.5
124.0 1.5
138.0 55.0
139.0 100.0
140.0 8.3
143.0 1.1