Mass
MS-IW-7729 2-pyrazinecarboxamide 4-oxide C5H5N3O2 (Mass of molecular ion: 139)
Source Temperature: 180 °C Sample Temperature: 180 °C Direct, 75 eV
18.0 2.9
26.0 4.2
27.0 2.2
28.0 6.5
30.0 4.4
38.0 2.5
39.0 6.2
40.0 4.7
41.0 6.7
42.0 4.6
43.0 1.5
44.0 11.9
51.0 6.7
52.0 20.7
53.0 6.6
64.0 1.3
66.0 5.8
67.0 2.0
68.0 1.3
77.0 1.3
78.0 7.4
79.0 3.6
80.0 6.1
95.0 7.1
96.0 58.6
97.0 3.1
105.0 10.3
121.0 24.5
122.0 2.0
123.0 5.4
139.0 100.0
140.0 8.4
KBr disc
nujol mull
