5,7-Dihydroxy-4-methylcoumarin(2107-76-8) IR1
Molecular FormulaC10H8O4
Molecular Weight192.17
InChIInChI=1S/C10H8O4/c1-5-2-9(13)14-8-4-6(11)3-7(12)10(5)8/h2-4,11-12H,1H3
InChIKey QNVWGEJMXOQQPM-UHFFFAOYSA-N
SmilesC1(=O)OC2=CC(O)=CC(O)=C2C(C)=C1
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![](https://www.chemicalbook.com/Spectrum/2107-76-8_MS.gif)
Mass
MS-IW-2245
5,7-dihydroxy-4-methylcoumarin
C10H8O4 (Mass of molecular ion: 192)
Source Temperature: 180 °C
Sample Temperature: 160 °C
Direct, 75 eV
18.0 2.8
27.0 2.5
28.0 1.2
29.0 1.5
38.0 1.8
39.0 6.6
40.0 1.1
41.0 2.2
42.0 1.3
43.0 2.7
45.0 1.1
50.0 3.0
51.0 5.4
52.0 3.3
53.0 5.8
54.0 1.8
55.0 3.9
59.0 1.7
62.0 1.8
63.0 3.6
64.0 1.3
65.0 4.7
66.0 3.0
67.0 4.9
68.0 1.1
69.0 16.8
73.0 1.1
74.0 1.2
75.0 1.1
77.0 7.7
78.0 2.1
79.0 6.9
80.0 2.6
81.0 1.0
81.5 1.3
82.0 5.8
89.0 1.9
90.0 1.2
91.0 1.4
93.0 2.4
94.0 1.2
95.0 4.2
107.0 5.8
108.0 2.8
111.0 1.5
121.0 8.2
122.0 1.5
123.0 1.1
135.0 7.5
136.0 4.5
147.0 3.4
163.0 37.1
164.0 100.0
165.0 10.2
166.0 1.0
191.0 1.9
192.0 96.2
193.0 11.0
194.0 1.4
220.0 1.3