Allopurinol(315-30-0) MS
Molecular FormulaC5H4N4O
Molecular Weight136.11
InChIInChI=1S/C5H4N4O/c10-5-3-1-8-9-4(3)6-2-7-5/h1-2H,(H2,6,7,8,9,10)
InChIKey OFCNXPDARWKPPY-UHFFFAOYSA-N
SmilesC1NC(=O)C2C=NNC=2N=1
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![](https://www.chemicalbook.com/Spectrum/315-30-0_MS.gif)
Mass
MS-NW-3779
pyrazolo(3,4-d)pyrimidin-4-ol
C5H4N4O (Mass of molecular ion: 136)
Source Temperature: 220 °C
Sample Temperature: 150 °C
Direct, 75 eV
18.0 2.6
27.0 2.4
28.0 17.0
29.0 17.2
37.0 1.5
38.0 3.2
39.0 3.1
40.0 1.4
42.0 1.3
43.0 4.2
51.0 4.6
52.0 19.3
53.0 6.8
54.0 1.8
55.0 1.0
64.0 1.1
65.0 1.1
66.0 1.0
67.0 4.5
68.0 2.9
79.0 1.9
80.0 2.5
81.0 1.6
94.0 1.5
109.0 6.0
120.0 2.1
135.0 11.1
136.0 100.0
137.0 7.0