![图谱](https://www.chemicalbook.com/Spectrum/63467-20-9_MS_1.jpg)
Mass
MS-IW-6123
4-(2,5-dimethoxybenzoyl)butyric acid
C13H16O5 (Mass of molecular ion: 252)
Source Temperature: 150 °C
Sample Temperature: 110 °C
Direct, 75 eV
55.0 1.4
77.0 3.4
79.0 1.6
92.0 1.5
107.0 6.6
109.0 1.6
122.0 3.2
150.0 3.2
151.0 1.0
165.0 100.0
166.0 10.1
167.0 1.0
180.0 1.2
193.0 1.7
234.0 1.3
235.0 1.1
252.0 36.0
253.0 5.3
280.0 2.0