2,3,4,5-TETRAMETHYL-2-CYCLOPENTENONE(54458-61-6) 1H NMR
Molecular FormulaC9H14O
Molecular Weight138.21
InChIInChI=1S/C9H14O/c1-5-6(2)8(4)9(10)7(5)3/h5,7H,1-4H3
InChIKey ARUAYSANQMCCEN-UHFFFAOYSA-N
SmilesC1(=O)C(C)C(C)C(C)=C1C
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![](https://www.chemicalbook.com/Spectrum/54458-61-6_MS.gif)
Mass
MS-NW-9943
2,3,4,5-tetramethyl-2-cyclopentenone
C9H14O (Mass of molecular ion: 138)
Source Temperature: 220 °C
Sample Temperature: 160 °C
Reservoir, 75 eV
27.0 8.9
28.0 2.3
29.0 6.2
39.0 11.5
40.0 1.8
41.0 14.9
43.0 4.3
50.0 1.4
51.0 3.8
52.0 2.0
53.0 9.3
54.0 4.6
55.0 17.4
56.0 5.2
57.0 1.8
63.0 1.0
65.0 3.0
66.0 1.0
67.0 21.6
68.0 2.6
69.0 1.6
77.0 5.2
78.0 1.1
79.0 6.1
80.0 1.7
81.0 8.8
82.0 2.6
83.0 6.1
91.0 2.8
93.0 4.2
95.0 50.4
96.0 4.3
105.0 1.2
109.0 4.6
110.0 18.2
111.0 1.8
123.0 100.0
124.0 9.2
137.0 3.9
138.0 53.2
139.0 6.5