Mass
MS-IW-9943
(1R-trans)-1,2-cyclobutanedicarboxylic acid
C6H8O4 (Mass of molecular ion: 144)
Source Temperature: 170 °C
Sample Temperature: 140 °C
Direct, 75 eV
18.0 3.9
26.0 8.6
27.0 35.9
28.0 21.5
29.0 16.3
31.0 1.8
38.0 1.4
39.0 13.4
40.0 1.4
41.0 9.3
42.0 8.2
43.0 28.1
44.0 5.6
45.0 27.2
46.0 1.6
50.0 2.9
51.0 4.5
52.0 2.9
53.0 27.2
54.0 17.1
55.0 62.5
56.0 8.4
57.0 13.6
58.0 4.1
60.0 1.2
68.0 1.1
69.0 10.8
70.0 10.0
71.0 13.8
72.0 14.0
73.0 44.7
74.0 1.7
80.0 6.8
81.0 25.9
82.0 10.6
83.0 1.4
84.0 1.3
85.0 1.3
86.0 1.0
88.0 1.0
97.0 8.6
98.0 100.0
99.0 39.6
100.0 8.1
108.0 16.5
109.0 1.1
117.0 14.9
126.0 86.7
127.0 10.0
128.0 1.1