4-(4-Nitrophenyl)azoresorcinol (74-39-5) 1H NMR
Molecular FormulaC12H9N3O4
Molecular Weight259.22
InChIInChI=1S/C12H9N3O4/c16-10-5-6-11(12(17)7-10)14-13-8-1-3-9(4-2-8)15(18)19/h1-7,16-17H
InChIKey NGPGYVQZGRJHFJ-UHFFFAOYSA-N
SmilesC1(O)=CC=C(N=NC2=CC=C([N+]([O-])=O)C=C2)C(O)=C1
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![](https://www.chemicalbook.com/Spectrum/74-39-5_MS.gif)
Mass
MS-NW-2483
4-(p-nitrophenylazo)resorcinol
C12H9N3O4 (Mass of molecular ion: 259)
Source Temperature: 200 °C
Sample Temperature: 200 °C
Direct, 75 eV
17.0 2.5
18.0 13.4
26.0 1.4
27.0 7.5
28.0 9.4
29.0 1.7
30.0 5.4
37.0 1.3
38.0 2.9
39.0 12.3
40.0 1.5
41.0 2.2
42.0 1.4
43.0 1.3
44.0 1.5
50.0 7.0
51.0 5.4
52.0 7.3
53.0 14.9
54.0 1.5
55.0 3.7
62.0 1.8
63.0 7.2
64.0 5.4
65.0 5.5
66.0 2.0
67.0 1.5
68.0 1.5
69.0 18.5
74.0 1.2
75.0 8.0
76.0 9.4
77.0 2.3
78.0 1.0
79.0 2.7
80.0 6.4
81.0 42.7
82.0 2.6
90.0 1.0
91.0 1.7
92.0 11.0
93.0 2.3
95.0 3.5
106.0 1.4
107.0 2.1
108.0 4.0
109.0 100.0
110.0 8.1
120.0 2.3
122.0 11.6
123.0 1.6
128.0 1.1
137.0 96.5
138.0 10.0
139.0 1.2
184.0 1.9
199.0 1.3
201.0 1.0
229.0 5.2
259.0 45.0
260.0 6.2
400 MHz in DMSO-d6 at 50C